56982997 has 18 divisors (see below), whose sum is σ = 63031398. Its totient is φ = 51466752.

The previous prime is 56982953. The next prime is 56983001. The reversal of 56982997 is 79928965.

It can be written as a sum of positive squares in 9 ways, for example, as 2208196 + 54774801 = 1486^2 + 7401^2 .

It is a de Polignac number, because none of the positive numbers 2^k-56982997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56982797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 780553 + ... + 780625.

Almost surely, 2^56982997 is an apocalyptic number.

It is an amenable number.

56982997 is a deficient number, since it is larger than the sum of its proper divisors (6048401).

56982997 is an equidigital number, since it uses as much as digits as its factorization.

56982997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 127 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 55.

The square root of 56982997 is about 7548.7083001001. The cubic root of 56982997 is about 384.8118426176.

The spelling of 56982997 in words is "fifty-six million, nine hundred eighty-two thousand, nine hundred ninety-seven".