55168992 has 48 divisors (see below), whose sum is σ = 160912080. Its totient is φ = 18389376.

The previous prime is 55168979. The next prime is 55168999. The reversal of 55168992 is 29986155.

55168992 is a `hidden beast` number, since 551 + 6 + 8 + 9 + 92 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55168999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31063 + ... + 32790.

It is an arithmetic number, because the mean of its divisors is an integer number (3352335).

Almost surely, 2^55168992 is an apocalyptic number.

It is an amenable number.

55168992 is an abundant number, since it is smaller than the sum of its proper divisors (105743088).

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

55168992 is a wasteful number, since it uses less digits than its factorization.

55168992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63872 (or 63858 counting only the distinct ones).

The product of its digits is 194400, while the sum is 45.

The square root of 55168992 is about 7427.5831870131. The cubic root of 55168992 is about 380.6843439224.

The spelling of 55168992 in words is "fifty-five million, one hundred sixty-eight thousand, nine hundred ninety-two".