55578572 has 24 divisors (see below), whose sum is σ = 117008640. Its totient is φ = 22565520.

The previous prime is 55578547. The next prime is 55578613. The reversal of 55578572 is 27587555.

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, 51704 + ... + 52767.

It is an arithmetic number, because the mean of its divisors is an integer number (4875360).

Almost surely, 2^55578572 is an apocalyptic number.

It is an amenable number.

55578572 is an abundant number, since it is smaller than the sum of its proper divisors (61430068).

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

55578572 is a wasteful number, since it uses less digits than its factorization.

55578572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104501 (or 104499 counting only the distinct ones).

The product of its digits is 490000, while the sum is 44.

The square root of 55578572 is about 7455.1037551465. The cubic root of 55578572 is about 381.6241014126.

The spelling of 55578572 in words is "fifty-five million, five hundred seventy-eight thousand, five hundred seventy-two".