55630724 has 6 divisors (see below), whose sum is σ = 97353774. Its totient is φ = 27815360.

The previous prime is 55630723. The next prime is 55630739. The reversal of 55630724 is 42703655.

It can be written as a sum of positive squares in only one way, i.e., 41190724 + 14440000 = 6418^2 + 3800^2 .

It is not an unprimeable number, because it can be changed into a prime (55630723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6953837 + ... + 6953844.

It is an arithmetic number, because the mean of its divisors is an integer number (16225629).

Almost surely, 2^55630724 is an apocalyptic number.

It is an amenable number.

55630724 is a deficient number, since it is larger than the sum of its proper divisors (41723050).

55630724 is a wasteful number, since it uses less digits than its factorization.

55630724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13907685 (or 13907683 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 32.

The square root of 55630724 is about 7458.6006730485. The cubic root of 55630724 is about 381.7434294049.

The spelling of 55630724 in words is "fifty-five million, six hundred thirty thousand, seven hundred twenty-four".