55507100 has 36 divisors (see below), whose sum is σ = 131403048. Its totient is φ = 20184000.

The previous prime is 55507087. The next prime is 55507121. The reversal of 55507100 is 170555.

It is a congruent number.

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, 24131 + ... + 26330.

Almost surely, 2^55507100 is an apocalyptic number.

55507100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55507100 is an abundant number, since it is smaller than the sum of its proper divisors (75895948).

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

55507100 is a wasteful number, since it uses less digits than its factorization.

55507100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50486 (or 50479 counting only the distinct ones).

The product of its (nonzero) digits is 875, while the sum is 23.

The square root of 55507100 is about 7450.3087184358. The cubic root of 55507100 is about 381.4604463870.

Adding to 55507100 its reverse (170555), we get a palindrome (55677655).

The spelling of 55507100 in words is "fifty-five million, five hundred seven thousand, one hundred".