56735569 has 6 divisors (see below), whose sum is σ = 62362370. Its totient is φ = 51577680.

The previous prime is 56735537. The next prime is 56735621. The reversal of 56735569 is 96553765.

It can be written as a sum of positive squares in only one way, i.e., 44729344 + 12006225 = 6688^2 + 3465^2 .

It is not a de Polignac number, because 56735569 - 2⁵ = 56735537 is a prime.

It is a super-2 number, since 2×56735569² = 6437849579507522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56735269) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 234324 + ... + 234565.

Almost surely, 2^56735569 is an apocalyptic number.

It is an amenable number.

56735569 is a deficient number, since it is larger than the sum of its proper divisors (5626801).

56735569 is a wasteful number, since it uses less digits than its factorization.

56735569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468911 (or 468900 counting only the distinct ones).

The product of its digits is 850500, while the sum is 46.

The square root of 56735569 is about 7532.3017066498. The cubic root of 56735569 is about 384.2540658967.

The spelling of 56735569 in words is "fifty-six million, seven hundred thirty-five thousand, five hundred sixty-nine".