55551512 has 32 divisors (see below), whose sum is σ = 111449520. Its totient is φ = 25866240.

The previous prime is 55551493. The next prime is 55551547. The reversal of 55551512 is 21515555.

55551512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×55551512² = 6171940970972288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 11087 + ... + 15297.

Almost surely, 2^55551512 is an apocalyptic number.

It is an amenable number.

55551512 is an abundant number, since it is smaller than the sum of its proper divisors (55898008).

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

55551512 is a wasteful number, since it uses less digits than its factorization.

55551512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4331 (or 4327 counting only the distinct ones).

The product of its digits is 6250, while the sum is 29.

The square root of 55551512 is about 7453.2886701107. The cubic root of 55551512 is about 381.5621565286.

The spelling of 55551512 in words is "fifty-five million, five hundred fifty-one thousand, five hundred twelve".