55572724 has 12 divisors (see below), whose sum is σ = 97586244. Its totient is φ = 27690944.

The previous prime is 55572721. The next prime is 55572763. The reversal of 55572724 is 42727555.

It can be written as a sum of positive squares in 2 ways, for example, as 31248100 + 24324624 = 5590^2 + 4932^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55572721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22537 + ... + 24880.

It is an arithmetic number, because the mean of its divisors is an integer number (8132187).

Almost surely, 2^55572724 is an apocalyptic number.

It is an amenable number.

55572724 is a deficient number, since it is larger than the sum of its proper divisors (42013520).

55572724 is a wasteful number, since it uses less digits than its factorization.

55572724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47714 (or 47712 counting only the distinct ones).

The product of its digits is 98000, while the sum is 37.

The square root of 55572724 is about 7454.7115303008. The cubic root of 55572724 is about 381.6107160620.

It can be divided in two parts, 5557 and 2724, that added together give a square (8281 = 91²).

The spelling of 55572724 in words is "fifty-five million, five hundred seventy-two thousand, seven hundred twenty-four".