55577861100 has 72 divisors (see below), whose sum is σ = 178672539920. Its totient is φ = 14820762240.

The previous prime is 55577861093. The next prime is 55577861113. The reversal of 55577861100 is 116877555.

55577861100 is a `hidden beast` number, since 5 + 5 + 577 + 8 + 61 + 10 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10289497 + ... + 10294896.

Almost surely, 2^55577861100 is an apocalyptic number.

55577861100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55577861100 is an abundant number, since it is smaller than the sum of its proper divisors (123094678820).

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

55577861100 is a wasteful number, since it uses less digits than its factorization.

55577861100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20584416 (or 20584403 counting only the distinct ones).

The product of its (nonzero) digits is 294000, while the sum is 45.

The spelling of 55577861100 in words is "fifty-five billion, five hundred seventy-seven million, eight hundred sixty-one thousand, one hundred".