56897747 has 2 divisors, whose sum is σ = 56897748. Its totient is φ = 56897746.

The previous prime is 56897717. The next prime is 56897773. The reversal of 56897747 is 74779865.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56897747 - 2¹⁸ = 56635603 is a prime.

It is a super-2 number, since 2×56897747² = 6474707227352018, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (56897707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28448873 + 28448874.

It is an arithmetic number, because the mean of its divisors is an integer number (28448874).

Almost surely, 2^56897747 is an apocalyptic number.

56897747 is a deficient number, since it is larger than the sum of its proper divisors (1).

56897747 is an equidigital number, since it uses as much as digits as its factorization.

56897747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2963520, while the sum is 53.

The square root of 56897747 is about 7543.0595251529. The cubic root of 56897747 is about 384.6198462652.

The spelling of 56897747 in words is "fifty-six million, eight hundred ninety-seven thousand, seven hundred forty-seven".