56587021952 has 16 divisors (see below), whose sum is σ = 112731958050. Its totient is φ = 28293510912.

The previous prime is 56587021949. The next prime is 56587021957. The reversal of 56587021952 is 25912078565.

It can be written as a sum of positive squares in only one way, i.e., 39817807936 + 16769214016 = 199544^2 + 129496^2 .

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

It is a super-2 number, since 2×56587021952² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56587021952.

It is not an unprimeable number, because it can be changed into a prime (56587021957) 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 as a sum of consecutive naturals, namely, 221042927 + ... + 221043182.

Almost surely, 2^56587021952 is an apocalyptic number.

It is an amenable number.

56587021952 is a deficient number, since it is larger than the sum of its proper divisors (56144936098).

56587021952 is an equidigital number, since it uses as much as digits as its factorization.

56587021952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442086123 (or 442086111 counting only the distinct ones).

The product of its (nonzero) digits is 1512000, while the sum is 50.

The spelling of 56587021952 in words is "fifty-six billion, five hundred eighty-seven million, twenty-one thousand, nine hundred fifty-two".