55912857 has 64 divisors (see below), whose sum is σ = 102660096. Its totient is φ = 26127360.

The previous prime is 55912853. The next prime is 55912873. The reversal of 55912857 is 75821955.

55912857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55912857 - 2² = 55912853 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55912853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 128913 + ... + 129345.

It is an arithmetic number, because the mean of its divisors is an integer number (1604064).

Almost surely, 2^55912857 is an apocalyptic number.

It is an amenable number.

55912857 is a deficient number, since it is larger than the sum of its proper divisors (46747239).

55912857 is a wasteful number, since it uses less digits than its factorization.

55912857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510.

The product of its digits is 126000, while the sum is 42.

The square root of 55912857 is about 7477.4900200535. The cubic root of 55912857 is about 382.3876828583.

It can be divided in two parts, 5591 and 2857, that added together give a palindrome (8448).

The spelling of 55912857 in words is "fifty-five million, nine hundred twelve thousand, eight hundred fifty-seven".