56231497589 has 2 divisors, whose sum is σ = 56231497590. Its totient is φ = 56231497588.

The previous prime is 56231497573. The next prime is 56231497607. The reversal of 56231497589 is 98579413265.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48293578564 + 7937919025 = 219758^2 + 89095^2 .

It is a cyclic number.

It is not a de Polignac number, because 56231497589 - 2⁴ = 56231497573 is a prime.

It is a super-2 number, since 2×56231497589² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56231497789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28115748794 + 28115748795.

It is an arithmetic number, because the mean of its divisors is an integer number (28115748795).

Almost surely, 2^56231497589 is an apocalyptic number.

It is an amenable number.

56231497589 is a deficient number, since it is larger than the sum of its proper divisors (1).

56231497589 is an equidigital number, since it uses as much as digits as its factorization.

56231497589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16329600, while the sum is 59.

The spelling of 56231497589 in words is "fifty-six billion, two hundred thirty-one million, four hundred ninety-seven thousand, five hundred eighty-nine".