56157824 has 16 divisors (see below), whose sum is σ = 111877170. Its totient is φ = 28078848.

The previous prime is 56157821. The next prime is 56157839. The reversal of 56157824 is 42875165.

It can be written as a sum of positive squares in only one way, i.e., 41473600 + 14684224 = 6440^2 + 3832^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (56157821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219239 + ... + 219494.

Almost surely, 2^56157824 is an apocalyptic number.

It is an amenable number.

56157824 is a deficient number, since it is larger than the sum of its proper divisors (55719346).

56157824 is an equidigital number, since it uses as much as digits as its factorization.

56157824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438747 (or 438735 counting only the distinct ones).

The product of its digits is 67200, while the sum is 38.

The square root of 56157824 is about 7493.8524138123. The cubic root of 56157824 is about 382.9453118815.

It can be divided in two parts, 561 and 57824, that added together give a palindrome (58385).

The spelling of 56157824 in words is "fifty-six million, one hundred fifty-seven thousand, eight hundred twenty-four".