55936857 has 4 divisors (see below), whose sum is σ = 74582480. Its totient is φ = 37291236.

The previous prime is 55936849. The next prime is 55936861. The reversal of 55936857 is 75863955.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 55936857 - 2³ = 55936849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55936807) 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, 9322807 + ... + 9322812.

It is an arithmetic number, because the mean of its divisors is an integer number (18645620).

Almost surely, 2^55936857 is an apocalyptic number.

It is an amenable number.

55936857 is a deficient number, since it is larger than the sum of its proper divisors (18645623).

55936857 is a wasteful number, since it uses less digits than its factorization.

55936857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18645622.

The product of its digits is 1134000, while the sum is 48.

The square root of 55936857 is about 7479.0946644631. The cubic root of 55936857 is about 382.4423869824.

The spelling of 55936857 in words is "fifty-five million, nine hundred thirty-six thousand, eight hundred fifty-seven".