56057017 has 6 divisors (see below), whose sum is σ = 56413022. Its totient is φ = 55703232.

The previous prime is 56056951. The next prime is 56057033. The reversal of 56057017 is 71075065.

It can be written as a sum of positive squares in 3 ways, for example, as 15912121 + 40144896 = 3989^2 + 6336^2 .

It is not a de Polignac number, because 56057017 - 2¹⁵ = 56024249 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56057017.

It is not an unprimeable number, because it can be changed into a prime (56057047) 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, 28993 + ... + 30865.

Almost surely, 2^56057017 is an apocalyptic number.

It is an amenable number.

56057017 is a deficient number, since it is larger than the sum of its proper divisors (356005).

56057017 is an equidigital number, since it uses as much as digits as its factorization.

56057017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2219 (or 2046 counting only the distinct ones).

The product of its (nonzero) digits is 7350, while the sum is 31.

The square root of 56057017 is about 7487.1234129003. The cubic root of 56057017 is about 382.7160372704.

The spelling of 56057017 in words is "fifty-six million, fifty-seven thousand, seventeen".