45567972 has 18 divisors (see below), whose sum is σ = 115185798. Its totient is φ = 15189312.

The previous prime is 45567943. The next prime is 45567989. The reversal of 45567972 is 27976554.

45567972 is a `hidden beast` number, since 4 + 556 + 7 + 97 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 45481536 + 86436 = 6744^2 + 294^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 632853 + ... + 632924.

It is an arithmetic number, because the mean of its divisors is an integer number (6399211).

Almost surely, 2^45567972 is an apocalyptic number.

It is an amenable number.

45567972 is an abundant number, since it is smaller than the sum of its proper divisors (69617826).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45567972 is a wasteful number, since it uses less digits than its factorization.

45567972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265787 (or 1265782 counting only the distinct ones).

The product of its digits is 529200, while the sum is 45.

The square root of 45567972 is about 6750.4053211641. The cubic root of 45567972 is about 357.1795344885.

The spelling of 45567972 in words is "forty-five million, five hundred sixty-seven thousand, nine hundred seventy-two".