55372072 has 32 divisors (see below), whose sum is σ = 119776320. Its totient is φ = 23506560.

The previous prime is 55372069. The next prime is 55372073. The reversal of 55372072 is 27027355.

It is not an unprimeable number, because it can be changed into a prime (55372073) 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, 1372 + ... + 10612.

It is an arithmetic number, because the mean of its divisors is an integer number (3743010).

Almost surely, 2^55372072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55372072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59888160).

55372072 is an abundant number, since it is smaller than the sum of its proper divisors (64404248).

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

55372072 is a wasteful number, since it uses less digits than its factorization.

55372072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9361 (or 9357 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 31.

The square root of 55372072 is about 7441.2412943003. The cubic root of 55372072 is about 381.1508783970.

The spelling of 55372072 in words is "fifty-five million, three hundred seventy-two thousand, seventy-two".