130566145 has 4 divisors (see below), whose sum is σ = 156679380. Its totient is φ = 104452912.

The previous prime is 130566133. The next prime is 130566173. The reversal of 130566145 is 541665031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 541665031 = 5749 ⋅94219.

It can be written as a sum of positive squares in 2 ways, for example, as 91240704 + 39325441 = 9552^2 + 6271^2 .

It is a cyclic number.

It is not a de Polignac number, because 130566145 - 2²³ = 122177537 is a prime.

It is a super-2 number, since 2×130566145² = 34095036440322050, which contains 22 as substring.

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 an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13056610 + ... + 13056619.

It is an arithmetic number, because the mean of its divisors is an integer number (39169845).

Almost surely, 2^130566145 is an apocalyptic number.

It is an amenable number.

130566145 is a deficient number, since it is larger than the sum of its proper divisors (26113235).

130566145 is an equidigital number, since it uses as much as digits as its factorization.

130566145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26113234.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 130566145 is about 11426.5543800395. The cubic root of 130566145 is about 507.3140153432.

The spelling of 130566145 in words is "one hundred thirty million, five hundred sixty-six thousand, one hundred forty-five".