56487028900 has 27 divisors (see below), whose sum is σ = 122582010369. Its totient is φ = 22593860880.

The previous prime is 56487028883. The next prime is 56487028903. The reversal of 56487028900 is 982078465.

The square root of 56487028900 is 237670.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 20335330404 + 36151698496 = 142602^2 + 190136^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56487028903) 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 in 8 ways as a sum of consecutive naturals, for example, 2364817 + ... + 2388583.

Almost surely, 2^56487028900 is an apocalyptic number.

56487028900 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

56487028900 is the 237670-th square number.

It is an amenable number.

56487028900 is an abundant number, since it is smaller than the sum of its proper divisors (66094981469).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56487028900 is an frugal number, since it uses more digits than its factorization.

56487028900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47548 (or 23774 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 49.

Multiplying 56487028900 by its sum of digits (49), we get a square (2767864416100 = 1663690²).

The spelling of 56487028900 in words is "fifty-six billion, four hundred eighty-seven million, twenty-eight thousand, nine hundred".