45121872 has 40 divisors (see below), whose sum is σ = 116938944. Its totient is φ = 14992384.

The previous prime is 45121847. The next prime is 45121873. The reversal of 45121872 is 27812154.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45121873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15613 + ... + 18275.

Almost surely, 2^45121872 is an apocalyptic number.

It is an amenable number.

45121872 is an abundant number, since it is smaller than the sum of its proper divisors (71817072).

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

45121872 is a wasteful number, since it uses less digits than its factorization.

45121872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3027 (or 3021 counting only the distinct ones).

The product of its digits is 4480, while the sum is 30.

The square root of 45121872 is about 6717.2815930256. The cubic root of 45121872 is about 356.0101415282.

The spelling of 45121872 in words is "forty-five million, one hundred twenty-one thousand, eight hundred seventy-two".