55401188 has 24 divisors (see below), whose sum is σ = 102973920. Its totient is φ = 26006400.

The previous prime is 55401187. The next prime is 55401197. The reversal of 55401188 is 88110455.

It is a super-2 number, since 2×55401188² = 6138583263622688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55401187) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5363 + ... + 11813.

It is an arithmetic number, because the mean of its divisors is an integer number (4290580).

Almost surely, 2^55401188 is an apocalyptic number.

It is an amenable number.

55401188 is a deficient number, since it is larger than the sum of its proper divisors (47572732).

55401188 is a wasteful number, since it uses less digits than its factorization.

55401188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6587 (or 6585 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 32.

The square root of 55401188 is about 7443.1974312119. The cubic root of 55401188 is about 381.2176728659.

The spelling of 55401188 in words is "fifty-five million, four hundred one thousand, one hundred eighty-eight".