55373880 has 64 divisors (see below), whose sum is σ = 173352960. Its totient is φ = 14123648.

The previous prime is 55373839. The next prime is 55373881. The reversal of 55373880 is 8837355.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55373881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7272 + ... + 12791.

It is an arithmetic number, because the mean of its divisors is an integer number (2708640).

Almost surely, 2^55373880 is an apocalyptic number.

It is an amenable number.

55373880 is an abundant number, since it is smaller than the sum of its proper divisors (117979080).

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

55373880 is a wasteful number, since it uses less digits than its factorization.

55373880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20100 (or 20096 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 55373880 is about 7441.3627784163. The cubic root of 55373880 is about 381.1550267776.

The spelling of 55373880 in words is "fifty-five million, three hundred seventy-three thousand, eight hundred eighty".