55501884 has 36 divisors (see below), whose sum is σ = 140838880. Its totient is φ = 18429120.

The previous prime is 55501883. The next prime is 55501903. The reversal of 55501884 is 48810555.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×55501884³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55501883) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6912 + ... + 12600.

Almost surely, 2^55501884 is an apocalyptic number.

It is an amenable number.

55501884 is an abundant number, since it is smaller than the sum of its proper divisors (85336996).

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

55501884 is a wasteful number, since it uses less digits than its factorization.

55501884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5970 (or 5965 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 36.

The square root of 55501884 is about 7449.9586576034. The cubic root of 55501884 is about 381.4484974050.

The spelling of 55501884 in words is "fifty-five million, five hundred one thousand, eight hundred eighty-four".