55318992 has 40 divisors (see below), whose sum is σ = 143565216. Its totient is φ = 18354816.

The previous prime is 55318951. The next prime is 55318997. The reversal of 55318992 is 29981355.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55318997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8358 + ... + 13434.

Almost surely, 2^55318992 is an apocalyptic number.

It is an amenable number.

55318992 is an abundant number, since it is smaller than the sum of its proper divisors (88246224).

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

55318992 is a wasteful number, since it uses less digits than its factorization.

55318992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5315 (or 5309 counting only the distinct ones).

The product of its digits is 97200, while the sum is 42.

The square root of 55318992 is about 7437.6738299014. The cubic root of 55318992 is about 381.0290482878.

The spelling of 55318992 in words is "fifty-five million, three hundred eighteen thousand, nine hundred ninety-two".