56487389553 has 32 divisors (see below), whose sum is σ = 96281952000. Its totient is φ = 32061858048.

The previous prime is 56487389537. The next prime is 56487389579. The reversal of 56487389553 is 35598378465.

56487389553 is a `hidden beast` number, since 5 + 6 + 4 + 8 + 73 + 8 + 9 + 553 = 666.

56487389553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56487389553 - 2⁴ = 56487389537 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56487389953) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 974776 + ... + 1031097.

It is an arithmetic number, because the mean of its divisors is an integer number (3008811000).

Almost surely, 2^56487389553 is an apocalyptic number.

It is an amenable number.

56487389553 is a deficient number, since it is larger than the sum of its proper divisors (39794562447).

56487389553 is a wasteful number, since it uses less digits than its factorization.

56487389553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2006038 (or 2006032 counting only the distinct ones).

The product of its digits is 108864000, while the sum is 63.

It can be divided in two parts, 56487 and 389553, that added together give a triangular number (446040 = T₉₄₄).

The spelling of 56487389553 in words is "fifty-six billion, four hundred eighty-seven million, three hundred eighty-nine thousand, five hundred fifty-three".