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13490501 = 30743943
BaseRepresentation
bin110011011101…
…100101000101
3221101101111012
4303131211011
511423144001
61201052005
7222444623
oct63354505
927341435
1013490501
117684682
124627005
132a4455b
141b12513
1512b72bb
hexcdd945

13490501 has 4 divisors (see below), whose sum is σ = 13534752. Its totient is φ = 13446252.

The previous prime is 13490479. The next prime is 13490509. The reversal of 13490501 is 10509431.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10509431 = 75713883.

It is a cyclic number.

It is not a de Polignac number, because 13490501 - 222 = 9296197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13490509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21665 + ... + 22278.

It is an arithmetic number, because the mean of its divisors is an integer number (3383688).

Almost surely, 213490501 is an apocalyptic number.

It is an amenable number.

13490501 is a deficient number, since it is larger than the sum of its proper divisors (44251).

13490501 is an equidigital number, since it uses as much as digits as its factorization.

13490501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44250.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 13490501 is about 3672.9417365376. The cubic root of 13490501 is about 238.0542975708.

Adding to 13490501 its reverse (10509431), we get a palindrome (23999932).

The spelling of 13490501 in words is "thirteen million, four hundred ninety thousand, five hundred one".

Divisors: 1 307 43943 13490501