55055500400 has 30 divisors (see below), whose sum is σ = 132270840672. Its totient is φ = 22022200000.

The previous prime is 55055500391. The next prime is 55055500411. The reversal of 55055500400 is 400555055.

It is a super-2 number, since 2×55055500400² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68818976 + ... + 68819775.

Almost surely, 2^55055500400 is an apocalyptic number.

55055500400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55055500400 is an abundant number, since it is smaller than the sum of its proper divisors (77215340272).

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

55055500400 is a wasteful number, since it uses less digits than its factorization.

55055500400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137638769 (or 137638758 counting only the distinct ones).

The product of its (nonzero) digits is 12500, while the sum is 29.

The spelling of 55055500400 in words is "fifty-five billion, fifty-five million, five hundred thousand, four hundred".