56716157 has 4 divisors (see below), whose sum is σ = 56877180. Its totient is φ = 56555136.

The previous prime is 56716139. The next prime is 56716171. The reversal of 56716157 is 75161765.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23145721 + 33570436 = 4811^2 + 5794^2 .

It is a cyclic number.

It is not a de Polignac number, because 56716157 - 2²⁰ = 55667581 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 56716157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56716117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79982 + ... + 80687.

It is an arithmetic number, because the mean of its divisors is an integer number (14219295).

Almost surely, 2^56716157 is an apocalyptic number.

It is an amenable number.

56716157 is a deficient number, since it is larger than the sum of its proper divisors (161023).

56716157 is a wasteful number, since it uses less digits than its factorization.

56716157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161022.

The product of its digits is 44100, while the sum is 38.

The square root of 56716157 is about 7531.0130128689. The cubic root of 56716157 is about 384.2102368906.

The spelling of 56716157 in words is "fifty-six million, seven hundred sixteen thousand, one hundred fifty-seven".