55238991184 has 30 divisors (see below), whose sum is σ = 115891572606. Its totient is φ = 25494917760.

The previous prime is 55238991169. The next prime is 55238991193. The reversal of 55238991184 is 48119983255.

It can be written as a sum of positive squares in 3 ways, for example, as 1633776400 + 53605214784 = 40420^2 + 231528^2 .

It is a super-2 number, since 2×55238991184² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10211607 + ... + 10217014.

Almost surely, 2^55238991184 is an apocalyptic number.

It is an amenable number.

55238991184 is an abundant number, since it is smaller than the sum of its proper divisors (60652581422).

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

55238991184 is a wasteful number, since it uses less digits than its factorization.

55238991184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20428655 (or 20428636 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 55.

The spelling of 55238991184 in words is "fifty-five billion, two hundred thirty-eight million, nine hundred ninety-one thousand, one hundred eighty-four".