72555452 has 12 divisors (see below), whose sum is σ = 133654920. Its totient is φ = 34368336.

The previous prime is 72555449. The next prime is 72555493. The reversal of 72555452 is 25455527.

It is a super-2 number, since 2×72555452² = 10528587229848608, which contains 22 as substring.

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, 477263 + ... + 477414.

It is an arithmetic number, because the mean of its divisors is an integer number (11137910).

Almost surely, 2^72555452 is an apocalyptic number.

It is an amenable number.

72555452 is a deficient number, since it is larger than the sum of its proper divisors (61099468).

72555452 is a wasteful number, since it uses less digits than its factorization.

72555452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954700 (or 954698 counting only the distinct ones).

The product of its digits is 70000, while the sum is 35.

The square root of 72555452 is about 8517.9488141219. The cubic root of 72555452 is about 417.0838278222.

The spelling of 72555452 in words is "seventy-two million, five hundred fifty-five thousand, four hundred fifty-two".