55720524 has 24 divisors (see below), whose sum is σ = 130343920. Its totient is φ = 18526464.

The previous prime is 55720481. The next prime is 55720541. The reversal of 55720524 is 42502755.

It is a junction number, because it is equal to n+sod(n) for n = 55720491 and 55720500.

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, 769 + ... + 10584.

Almost surely, 2^55720524 is an apocalyptic number.

It is an amenable number.

55720524 is an abundant number, since it is smaller than the sum of its proper divisors (74623396).

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

55720524 is a wasteful number, since it uses less digits than its factorization.

55720524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11769 (or 11767 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 30.

The square root of 55720524 is about 7464.6181416064. The cubic root of 55720524 is about 381.9487244207.

The spelling of 55720524 in words is "fifty-five million, seven hundred twenty thousand, five hundred twenty-four".