55732736 has 40 divisors (see below), whose sum is σ = 112120800. Its totient is φ = 27675648.

The previous prime is 55732727. The next prime is 55732759. The reversal of 55732736 is 63723755.

It is a super-2 number, since 2×55732736² = 6212275724091392, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55732736.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101615 + ... + 102161.

It is an arithmetic number, because the mean of its divisors is an integer number (2803020).

Almost surely, 2^55732736 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 55732736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56060400).

55732736 is an abundant number, since it is smaller than the sum of its proper divisors (56388064).

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

55732736 is an equidigital number, since it uses as much as digits as its factorization.

55732736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764 (or 748 counting only the distinct ones).

The product of its digits is 132300, while the sum is 38.

The square root of 55732736 is about 7465.4360890708. The cubic root of 55732736 is about 381.9766256725.

The spelling of 55732736 in words is "fifty-five million, seven hundred thirty-two thousand, seven hundred thirty-six".