55986855 has 16 divisors (see below), whose sum is σ = 89753184. Its totient is φ = 29801600.

The previous prime is 55986841. The next prime is 55986857. The reversal of 55986855 is 55868955.

It is a de Polignac number, because none of the positive numbers 2^k-55986855 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55986798 and 55986807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55986857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5005 + ... + 11705.

It is an arithmetic number, because the mean of its divisors is an integer number (5609574).

Almost surely, 2^55986855 is an apocalyptic number.

55986855 is a deficient number, since it is larger than the sum of its proper divisors (33766329).

55986855 is a wasteful number, since it uses less digits than its factorization.

55986855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7266.

The product of its digits is 2160000, while the sum is 51.

The square root of 55986855 is about 7482.4364347450. The cubic root of 55986855 is about 382.5562991162.

The spelling of 55986855 in words is "fifty-five million, nine hundred eighty-six thousand, eight hundred fifty-five".