56486789 has 2 divisors, whose sum is σ = 56486790. Its totient is φ = 56486788.

The previous prime is 56486783. The next prime is 56486803. The reversal of 56486789 is 98768465.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46689889 + 9796900 = 6833^2 + 3130^2 .

It is a cyclic number.

It is not a de Polignac number, because 56486789 - 2²⁴ = 39709573 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56486789.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56486783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28243394 + 28243395.

It is an arithmetic number, because the mean of its divisors is an integer number (28243395).

Almost surely, 2^56486789 is an apocalyptic number.

It is an amenable number.

56486789 is a deficient number, since it is larger than the sum of its proper divisors (1).

56486789 is an equidigital number, since it uses as much as digits as its factorization.

56486789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2903040, while the sum is 53.

The square root of 56486789 is about 7515.7693551625. The cubic root of 56486789 is about 383.6916039695.

It can be divided in two parts, 56486 and 789, that added together give a palindrome (57275).

The spelling of 56486789 in words is "fifty-six million, four hundred eighty-six thousand, seven hundred eighty-nine".