45257523561 has 6 divisors (see below), whose sum is σ = 65371978490. Its totient is φ = 30171682368.

The previous prime is 45257523557. The next prime is 45257523583. The reversal of 45257523561 is 16532575254.

It is a happy number.

45257523561 is a `hidden beast` number, since 4 + 5 + 2 + 575 + 23 + 56 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 40554307161 + 4703216400 = 201381^2 + 68580^2 .

It is not a de Polignac number, because 45257523561 - 2² = 45257523557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45257523161) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2514306856 + ... + 2514306873.

Almost surely, 2^45257523561 is an apocalyptic number.

It is an amenable number.

45257523561 is a deficient number, since it is larger than the sum of its proper divisors (20114454929).

45257523561 is a wasteful number, since it uses less digits than its factorization.

45257523561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5028613735 (or 5028613732 counting only the distinct ones).

The product of its digits is 1260000, while the sum is 45.

The spelling of 45257523561 in words is "forty-five billion, two hundred fifty-seven million, five hundred twenty-three thousand, five hundred sixty-one".