55556316 has 72 divisors (see below), whose sum is σ = 147682080. Its totient is φ = 17576064.

The previous prime is 55556311. The next prime is 55556317. The reversal of 55556316 is 61365555.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55556311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 189466 + ... + 189758.

It is an arithmetic number, because the mean of its divisors is an integer number (2051140).

Almost surely, 2^55556316 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 55556316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73841040).

55556316 is an abundant number, since it is smaller than the sum of its proper divisors (92125764).

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

55556316 is a wasteful number, since it uses less digits than its factorization.

55556316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555 (or 550 counting only the distinct ones).

The product of its digits is 67500, while the sum is 36.

The square root of 55556316 is about 7453.6109369889. The cubic root of 55556316 is about 381.5731551597.

The spelling of 55556316 in words is "fifty-five million, five hundred fifty-six thousand, three hundred sixteen".