53555572 has 24 divisors (see below), whose sum is σ = 108319680. Its totient is φ = 22693440.

The previous prime is 53555563. The next prime is 53555581. The reversal of 53555572 is 27555535.

It is an interprime number because it is at equal distance from previous prime (53555563) and next prime (53555581).

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, 8254 + ... + 13237.

It is an arithmetic number, because the mean of its divisors is an integer number (4513320).

Almost surely, 2^53555572 is an apocalyptic number.

It is an amenable number.

53555572 is an abundant number, since it is smaller than the sum of its proper divisors (54764108).

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

53555572 is a wasteful number, since it uses less digits than its factorization.

53555572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21591 (or 21589 counting only the distinct ones).

The product of its digits is 131250, while the sum is 37.

The square root of 53555572 is about 7318.1672569025. The cubic root of 53555572 is about 376.9365234943.

Subtracting from 53555572 its sum of digits (37), we obtain a palindrome (53555535).

The spelling of 53555572 in words is "fifty-three million, five hundred fifty-five thousand, five hundred seventy-two".