56999997 has 16 divisors (see below), whose sum is σ = 89412480. Its totient is φ = 35764416.

The previous prime is 56999989. The next prime is 57000011. The reversal of 56999997 is 79999965.

56999997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56999997 - 2³ = 56999989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56999947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61633 + ... + 62550.

It is an arithmetic number, because the mean of its divisors is an integer number (5588280).

Almost surely, 2^56999997 is an apocalyptic number.

It is an amenable number.

56999997 is a deficient number, since it is larger than the sum of its proper divisors (32412483).

56999997 is a wasteful number, since it uses less digits than its factorization.

56999997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124209 (or 124203 counting only the distinct ones).

The product of its digits is 12400290, while the sum is 63.

The square root of 56999997 is about 7549.8342365909. The cubic root of 56999997 is about 384.8501063759.

The spelling of 56999997 in words is "fifty-six million, nine hundred ninety-nine thousand, nine hundred ninety-seven".