56505157 has 8 divisors (see below), whose sum is σ = 58908672. Its totient is φ = 54138000.

The previous prime is 56505151. The next prime is 56505199. The reversal of 56505157 is 75150565.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56505157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56505151) 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, 5893 + ... + 12154.

It is an arithmetic number, because the mean of its divisors is an integer number (7363584).

Almost surely, 2^56505157 is an apocalyptic number.

It is an amenable number.

56505157 is a deficient number, since it is larger than the sum of its proper divisors (2403515).

56505157 is a wasteful number, since it uses less digits than its factorization.

56505157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18179.

The product of its (nonzero) digits is 26250, while the sum is 34.

The square root of 56505157 is about 7516.9912198964. The cubic root of 56505157 is about 383.7331882275.

The spelling of 56505157 in words is "fifty-six million, five hundred five thousand, one hundred fifty-seven".