55190916 has 48 divisors (see below), whose sum is σ = 156098880. Its totient is φ = 16724160.

The previous prime is 55190903. The next prime is 55190957. The reversal of 55190916 is 61909155.

55190916 is a `hidden beast` number, since 551 + 90 + 9 + 16 = 666.

55190916 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

55190916 is strictly pandigital in base 9.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22041 + ... + 24416.

It is an arithmetic number, because the mean of its divisors is an integer number (3252060).

Almost surely, 2^55190916 is an apocalyptic number.

It is an amenable number.

55190916 is an abundant number, since it is smaller than the sum of its proper divisors (100907964).

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

55190916 is a wasteful number, since it uses less digits than its factorization.

55190916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46481 (or 46473 counting only the distinct ones).

The product of its (nonzero) digits is 12150, while the sum is 36.

The square root of 55190916 is about 7429.0588905998. The cubic root of 55190916 is about 380.7347648679.

The spelling of 55190916 in words is "fifty-five million, one hundred ninety thousand, nine hundred sixteen".