55858028100 has 144 divisors (see below), whose sum is σ = 191073187200. Its totient is φ = 12327275520.

The previous prime is 55858028059. The next prime is 55858028131. The reversal of 55858028100 is 182085855.

It is a super-2 number, since 2×55858028100² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 397705 + ... + 519504.

Almost surely, 2^55858028100 is an apocalyptic number.

55858028100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55858028100 is an abundant number, since it is smaller than the sum of its proper divisors (135215159100).

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

55858028100 is a wasteful number, since it uses less digits than its factorization.

55858028100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 917262 (or 917255 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 42.

The spelling of 55858028100 in words is "fifty-five billion, eight hundred fifty-eight million, twenty-eight thousand, one hundred".