45321872 has 10 divisors (see below), whose sum is σ = 87811158. Its totient is φ = 22660928.

The previous prime is 45321827. The next prime is 45321877. The reversal of 45321872 is 27812354.

It can be written as a sum of positive squares in only one way, i.e., 36772096 + 8549776 = 6064^2 + 2924^2 .

It is not an unprimeable number, because it can be changed into a prime (45321877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1416293 + ... + 1416324.

Almost surely, 2^45321872 is an apocalyptic number.

It is an amenable number.

45321872 is a deficient number, since it is larger than the sum of its proper divisors (42489286).

45321872 is a wasteful number, since it uses less digits than its factorization.

45321872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2832625 (or 2832619 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 45321872 is about 6732.1521076102. The cubic root of 45321872 is about 356.5353641742.

The spelling of 45321872 in words is "forty-five million, three hundred twenty-one thousand, eight hundred seventy-two".