55316628 has 96 divisors (see below), whose sum is σ = 149811200. Its totient is φ = 17635968.

The previous prime is 55316609. The next prime is 55316663. The reversal of 55316628 is 82661355.

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

It is a junction number, because it is equal to n+sod(n) for n = 55316592 and 55316601.

It is a congruent number.

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, 435501 + ... + 435627.

Almost surely, 2^55316628 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 55316628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74905600).

55316628 is an abundant number, since it is smaller than the sum of its proper divisors (94494572).

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

55316628 is a wasteful number, since it uses less digits than its factorization.

55316628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286 (or 278 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 55316628 is about 7437.5149075481. The cubic root of 55316628 is about 381.0236205828.

The spelling of 55316628 in words is "fifty-five million, three hundred sixteen thousand, six hundred twenty-eight".