55116992 has 56 divisors (see below), whose sum is σ = 132368544. Its totient is φ = 22228992.

The previous prime is 55116989. The next prime is 55117001. The reversal of 55116992 is 29961155.

It is a tau number, because it is divible by the number of its divisors (56).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3998 + ... + 11234.

It is an arithmetic number, because the mean of its divisors is an integer number (2363724).

Almost surely, 2^55116992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55116992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66184272).

55116992 is an abundant number, since it is smaller than the sum of its proper divisors (77251552).

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

55116992 is a wasteful number, since it uses less digits than its factorization.

55116992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7273 (or 7263 counting only the distinct ones).

The product of its digits is 24300, while the sum is 38.

The square root of 55116992 is about 7424.0818961000. The cubic root of 55116992 is about 380.5647005749.

The spelling of 55116992 in words is "fifty-five million, one hundred sixteen thousand, nine hundred ninety-two".