45661564 has 12 divisors (see below), whose sum is σ = 86054584. Its totient is φ = 21074544.

The previous prime is 45661559. The next prime is 45661597. The reversal of 45661564 is 46516654.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent 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, 439002 + ... + 439105.

Almost surely, 2^45661564 is an apocalyptic number.

It is an amenable number.

45661564 is a deficient number, since it is larger than the sum of its proper divisors (40393020).

45661564 is a wasteful number, since it uses less digits than its factorization.

45661564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878124 (or 878122 counting only the distinct ones).

The product of its digits is 86400, while the sum is 37.

The square root of 45661564 is about 6757.3340897132. The cubic root of 45661564 is about 357.4239041258.

It can be divided in two parts, 45661 and 564, that added together give a square (46225 = 215²).

The spelling of 45661564 in words is "forty-five million, six hundred sixty-one thousand, five hundred sixty-four".