55500100 has 36 divisors (see below), whose sum is σ = 123245584. Its totient is φ = 21682080.

The previous prime is 55500089. The next prime is 55500139. The reversal of 55500100 is 100555.

It is a super-2 number, since 2×55500100² = 6160522200020000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2154 + ... + 10753.

Almost surely, 2^55500100 is an apocalyptic number.

55500100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55500100 is an abundant number, since it is smaller than the sum of its proper divisors (67745484).

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

55500100 is a wasteful number, since it uses less digits than its factorization.

55500100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12964 (or 12957 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 16.

The square root of 55500100 is about 7449.8389244332. The cubic root of 55500100 is about 381.4444103881. Note that the first 4 decimals are identical.

Adding to 55500100 its reverse (100555), we get a palindrome (55600655).

The spelling of 55500100 in words is "fifty-five million, five hundred thousand, one hundred".