55986774 has 16 divisors (see below), whose sum is σ = 114578112. Its totient is φ = 18228168.

The previous prime is 55986773. The next prime is 55986781. The reversal of 55986774 is 47768955.

55986774 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55986773) 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 7 ways as a sum of consecutive naturals, for example, 108244 + ... + 108759.

It is an arithmetic number, because the mean of its divisors is an integer number (7161132).

Almost surely, 2^55986774 is an apocalyptic number.

55986774 is an abundant number, since it is smaller than the sum of its proper divisors (58591338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55986774 is a wasteful number, since it uses less digits than its factorization.

55986774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217051.

The product of its digits is 2116800, while the sum is 51.

The square root of 55986774 is about 7482.4310220676. The cubic root of 55986774 is about 382.5561146260.

The spelling of 55986774 in words is "fifty-five million, nine hundred eighty-six thousand, seven hundred seventy-four".