55250916 has 96 divisors (see below), whose sum is σ = 156791040. Its totient is φ = 14805504.

The previous prime is 55250891. The next prime is 55250977. The reversal of 55250916 is 61905255.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89826 + ... + 90438.

It is an arithmetic number, because the mean of its divisors is an integer number (1633240).

Almost surely, 2^55250916 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 55250916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78395520).

55250916 is an abundant number, since it is smaller than the sum of its proper divisors (101540124).

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

55250916 is a wasteful number, since it uses less digits than its factorization.

55250916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693 (or 691 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 33.

The square root of 55250916 is about 7433.0959902318. The cubic root of 55250916 is about 380.8726849844.

The spelling of 55250916 in words is "fifty-five million, two hundred fifty thousand, nine hundred sixteen".