56286889 has 2 divisors, whose sum is σ = 56286890. Its totient is φ = 56286888.

The previous prime is 56286887. The next prime is 56286899. The reversal of 56286889 is 98868265.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55995289 + 291600 = 7483^2 + 540^2 .

It is a cyclic number.

It is not a de Polignac number, because 56286889 - 2¹ = 56286887 is a prime.

Together with 56286887, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (56286887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28143444 + 28143445.

It is an arithmetic number, because the mean of its divisors is an integer number (28143445).

Almost surely, 2^56286889 is an apocalyptic number.

It is an amenable number.

56286889 is a deficient number, since it is larger than the sum of its proper divisors (1).

56286889 is an equidigital number, since it uses as much as digits as its factorization.

56286889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1658880, while the sum is 52.

The square root of 56286889 is about 7502.4588635993. The cubic root of 56286889 is about 383.2384560824.

It can be divided in two parts, 56286 and 889, that added together give a palindrome (57175).

The spelling of 56286889 in words is "fifty-six million, two hundred eighty-six thousand, eight hundred eighty-nine".