55351992 has 16 divisors (see below), whose sum is σ = 138380040. Its totient is φ = 18450656.

The previous prime is 55351987. The next prime is 55352027. The reversal of 55351992 is 29915355.

55351992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 55351992.

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 3 ways as a sum of consecutive naturals, for example, 1153143 + ... + 1153190.

Almost surely, 2^55351992 is an apocalyptic number.

It is an amenable number.

55351992 is an abundant number, since it is smaller than the sum of its proper divisors (83028048).

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

55351992 is a wasteful number, since it uses less digits than its factorization.

55351992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2306342 (or 2306338 counting only the distinct ones).

The product of its digits is 60750, while the sum is 39.

The square root of 55351992 is about 7439.8919346991. The cubic root of 55351992 is about 381.1047996026.

The spelling of 55351992 in words is "fifty-five million, three hundred fifty-one thousand, nine hundred ninety-two".