56891825472889 has 9 divisors (see below), whose sum is σ = 62534081180431. Its totient is φ = 51719765912320.

The previous prime is 56891825472887. The next prime is 56891825472943. The reversal of 56891825472889 is 98827452819865.

The square root of 56891825472889 is 7542667.

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

56891825472889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 32549364092025 + 24342461380864 = 5705205^2 + 4933808^2 .

It is not a de Polignac number, because 56891825472889 - 2¹ = 56891825472887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56891825472887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 82626489 + ... + 83312185.

Almost surely, 2^{56891825472889} is an apocalyptic number.

56891825472889 is the 7542667-th square number.

56891825472889 is the 3771334-th centered octagonal number.

It is an amenable number.

56891825472889 is a deficient number, since it is larger than the sum of its proper divisors (5642255707542).

56891825472889 is an frugal number, since it uses more digits than its factorization.

56891825472889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371416 (or 685708 counting only the distinct ones).

The product of its digits is 5573836800, while the sum is 82.

The spelling of 56891825472889 in words is "fifty-six trillion, eight hundred ninety-one billion, eight hundred twenty-five million, four hundred seventy-two thousand, eight hundred eighty-nine".