56789897497 has 2 divisors, whose sum is σ = 56789897498. Its totient is φ = 56789897496.

The previous prime is 56789897453. The next prime is 56789897501. The reversal of 56789897497 is 79479898765.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55290349321 + 1499548176 = 235139^2 + 38724^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56789897497 is a prime.

It is not a weakly prime, because it can be changed into another prime (56789897897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28394948748 + 28394948749.

It is an arithmetic number, because the mean of its divisors is an integer number (28394948749).

Almost surely, 2^56789897497 is an apocalyptic number.

It is an amenable number.

56789897497 is a deficient number, since it is larger than the sum of its proper divisors (1).

56789897497 is an equidigital number, since it uses as much as digits as its factorization.

56789897497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1920360960, while the sum is 79.

The spelling of 56789897497 in words is "fifty-six billion, seven hundred eighty-nine million, eight hundred ninety-seven thousand, four hundred ninety-seven".