55415900 has 36 divisors (see below), whose sum is σ = 120674568. Its totient is φ = 22088640.

The previous prime is 55415881. The next prime is 55415909. The reversal of 55415900 is 951455.

55415900 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55415909) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 33902 + ... + 35498.

Almost surely, 2^55415900 is an apocalyptic number.

55415900 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55415900 is an abundant number, since it is smaller than the sum of its proper divisors (65258668).

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

55415900 is a wasteful number, since it uses less digits than its factorization.

55415900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1958 (or 1951 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 55415900 is about 7444.1856505598. The cubic root of 55415900 is about 381.2514144891.

The spelling of 55415900 in words is "fifty-five million, four hundred fifteen thousand, nine hundred".