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130326565 = 526065313
BaseRepresentation
bin1111100010010…
…10000000100101
3100002020021102211
413301022000211
5231330422230
620533203421
73141520555
oct761120045
9302207384
10130326565
1167625306
1237790571
1321001315
1413447165
15b69542a
hex7c4a025

130326565 has 4 divisors (see below), whose sum is σ = 156391884. Its totient is φ = 104261248.

The previous prime is 130326509. The next prime is 130326569. The reversal of 130326565 is 565623031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 565623031 = 1733271943.

It can be written as a sum of positive squares in 2 ways, for example, as 90611361 + 39715204 = 9519^2 + 6302^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-130326565 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130326569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13032652 + ... + 13032661.

It is an arithmetic number, because the mean of its divisors is an integer number (39097971).

Almost surely, 2130326565 is an apocalyptic number.

It is an amenable number.

130326565 is a deficient number, since it is larger than the sum of its proper divisors (26065319).

130326565 is an equidigital number, since it uses as much as digits as its factorization.

130326565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26065318.

The product of its (nonzero) digits is 16200, while the sum is 31.

The square root of 130326565 is about 11416.0660912593. The cubic root of 130326565 is about 507.0035297823.

Adding to 130326565 its reverse (565623031), we get a palindrome (695949596).

The spelling of 130326565 in words is "one hundred thirty million, three hundred twenty-six thousand, five hundred sixty-five".

Divisors: 1 5 26065313 130326565