55726724 has 6 divisors (see below), whose sum is σ = 97521774. Its totient is φ = 27863360.

The previous prime is 55726721. The next prime is 55726751. The reversal of 55726724 is 42762755.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 46485124 + 9241600 = 6818^2 + 3040^2 .

It is not an unprimeable number, because it can be changed into a prime (55726721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6965837 + ... + 6965844.

It is an arithmetic number, because the mean of its divisors is an integer number (16253629).

Almost surely, 2^55726724 is an apocalyptic number.

It is an amenable number.

55726724 is a deficient number, since it is larger than the sum of its proper divisors (41795050).

55726724 is a wasteful number, since it uses less digits than its factorization.

55726724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13931685 (or 13931683 counting only the distinct ones).

The product of its digits is 117600, while the sum is 38.

The square root of 55726724 is about 7465.0334225642. The cubic root of 55726724 is about 381.9628903216.

The spelling of 55726724 in words is "fifty-five million, seven hundred twenty-six thousand, seven hundred twenty-four".