56135857 has 4 divisors (see below), whose sum is σ = 56160100. Its totient is φ = 56111616.

The previous prime is 56135843. The next prime is 56135867. The reversal of 56135857 is 75853165.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75853165 = 5 ⋅15170633.

It can be written as a sum of positive squares in 2 ways, for example, as 27363361 + 28772496 = 5231^2 + 5364^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56135857 is a prime.

It is a super-2 number, since 2×56135857² = 6302468882248898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56135867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8232 + ... + 13417.

It is an arithmetic number, because the mean of its divisors is an integer number (14040025).

Almost surely, 2^56135857 is an apocalyptic number.

It is an amenable number.

56135857 is a deficient number, since it is larger than the sum of its proper divisors (24243).

56135857 is a wasteful number, since it uses less digits than its factorization.

56135857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24242.

The product of its digits is 126000, while the sum is 40.

The square root of 56135857 is about 7492.3866024118. The cubic root of 56135857 is about 382.8953737123.

The spelling of 56135857 in words is "fifty-six million, one hundred thirty-five thousand, eight hundred fifty-seven".