55032072 has 64 divisors (see below), whose sum is σ = 141298560. Its totient is φ = 17856000.

The previous prime is 55032067. The next prime is 55032079. The reversal of 55032072 is 27023055.

It is a super-2 number, since 2×55032072² = 6057057897226368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (55032079) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176797 + ... + 177107.

It is an arithmetic number, because the mean of its divisors is an integer number (2207790).

Almost surely, 2^55032072 is an apocalyptic number.

It is an amenable number.

55032072 is an abundant number, since it is smaller than the sum of its proper divisors (86266488).

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

55032072 is a wasteful number, since it uses less digits than its factorization.

55032072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494 (or 490 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 24.

The square root of 55032072 is about 7418.3604657633. The cubic root of 55032072 is about 380.3691518891.

The spelling of 55032072 in words is "fifty-five million, thirty-two thousand, seventy-two".