55565712 has 60 divisors (see below), whose sum is σ = 159725020. Its totient is φ = 18019584.

The previous prime is 55565689. The next prime is 55565737. The reversal of 55565712 is 21756555.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 53056656 + 2509056 = 7284^2 + 1584^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 114 + ... + 10542.

Almost surely, 2^55565712 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 55565712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79862510).

55565712 is an abundant number, since it is smaller than the sum of its proper divisors (104159308).

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

55565712 is a wasteful number, since it uses less digits than its factorization.

55565712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10480 (or 10471 counting only the distinct ones).

The product of its digits is 52500, while the sum is 36.

The square root of 55565712 is about 7454.2412088689. The cubic root of 55565712 is about 381.5946652208.

The spelling of 55565712 in words is "fifty-five million, five hundred sixty-five thousand, seven hundred twelve".