55722872 has 32 divisors (see below), whose sum is σ = 114203520. Its totient is φ = 25374720.

The previous prime is 55722869. The next prime is 55722929. The reversal of 55722872 is 27822755.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2393 + ... + 10824.

It is an arithmetic number, because the mean of its divisors is an integer number (3568860).

Almost surely, 2^55722872 is an apocalyptic number.

It is an amenable number.

55722872 is an abundant number, since it is smaller than the sum of its proper divisors (58480648).

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

55722872 is a wasteful number, since it uses less digits than its factorization.

55722872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13271 (or 13267 counting only the distinct ones).

The product of its digits is 78400, while the sum is 38.

The square root of 55722872 is about 7464.7754152419. The cubic root of 55722872 is about 381.9540893081.

The spelling of 55722872 in words is "fifty-five million, seven hundred twenty-two thousand, eight hundred seventy-two".