55587508400 has 30 divisors (see below), whose sum is σ = 133548989892. Its totient is φ = 22235003200.

The previous prime is 55587508397. The next prime is 55587508421. The reversal of 55587508400 is 480578555.

It is a happy 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, 69483986 + ... + 69484785.

Almost surely, 2^55587508400 is an apocalyptic number.

55587508400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55587508400 is an abundant number, since it is smaller than the sum of its proper divisors (77961481492).

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

55587508400 is a wasteful number, since it uses less digits than its factorization.

55587508400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138968789 (or 138968778 counting only the distinct ones).

The product of its (nonzero) digits is 1120000, while the sum is 47.

The spelling of 55587508400 in words is "fifty-five billion, five hundred eighty-seven million, five hundred eight thousand, four hundred".