45465561 has 24 divisors (see below), whose sum is σ = 68590080. Its totient is φ = 28987200.

The previous prime is 45465551. The next prime is 45465569. The reversal of 45465561 is 16556454.

45465561 is a `hidden beast` number, since 4 + 546 + 55 + 61 = 666.

It is not a de Polignac number, because 45465561 - 2⁵ = 45465529 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45465569) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23916 + ... + 25746.

It is an arithmetic number, because the mean of its divisors is an integer number (2857920).

Almost surely, 2^45465561 is an apocalyptic number.

It is an amenable number.

45465561 is a deficient number, since it is larger than the sum of its proper divisors (23124519).

45465561 is a wasteful number, since it uses less digits than its factorization.

45465561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1957 (or 1954 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The square root of 45465561 is about 6742.8155098594. The cubic root of 45465561 is about 356.9117546641.

The spelling of 45465561 in words is "forty-five million, four hundred sixty-five thousand, five hundred sixty-one".