56400717 has 8 divisors (see below), whose sum is σ = 75284640. Its totient is φ = 37558640.

The previous prime is 56400709. The next prime is 56400731. The reversal of 56400717 is 71700465.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56400717 - 2³ = 56400709 is a prime.

It is a super-2 number, since 2×56400717² = 6362081756228178, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56400787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7167 + ... + 12812.

It is an arithmetic number, because the mean of its divisors is an integer number (9410580).

Almost surely, 2^56400717 is an apocalyptic number.

It is an amenable number.

56400717 is a deficient number, since it is larger than the sum of its proper divisors (18883923).

56400717 is a wasteful number, since it uses less digits than its factorization.

56400717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20923.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 56400717 is about 7510.0410784496. The cubic root of 56400717 is about 383.4966209621.

The spelling of 56400717 in words is "fifty-six million, four hundred thousand, seven hundred seventeen".