56855357 has 4 divisors (see below), whose sum is σ = 61228860. Its totient is φ = 52481856.

The previous prime is 56855321. The next prime is 56855363. The reversal of 56855357 is 75355865.

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 33709636 + 23145721 = 5806^2 + 4811^2 .

It is a cyclic number.

It is not a de Polignac number, because 56855357 - 2¹² = 56851261 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 (56855377) 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, 2186732 + ... + 2186757.

It is an arithmetic number, because the mean of its divisors is an integer number (15307215).

Almost surely, 2^56855357 is an apocalyptic number.

It is an amenable number.

56855357 is a deficient number, since it is larger than the sum of its proper divisors (4373503).

56855357 is a wasteful number, since it uses less digits than its factorization.

56855357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4373502.

The product of its digits is 630000, while the sum is 44.

The square root of 56855357 is about 7540.2491338151. The cubic root of 56855357 is about 384.5243059508.

The spelling of 56855357 in words is "fifty-six million, eight hundred fifty-five thousand, three hundred fifty-seven".