55864 has 8 divisors (see below), whose sum is σ = 104760. Its totient is φ = 27928.

The previous prime is 55849. The next prime is 55871. The reversal of 55864 is 46855.

55864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3484 + ... + 3499.

It is an arithmetic number, because the mean of its divisors is an integer number (13095).

2⁵⁵⁸⁶⁴ is an apocalyptic number.

It is an amenable number.

55864 is a deficient number, since it is larger than the sum of its proper divisors (48896).

55864 is a wasteful number, since it uses less digits than its factorization.

55864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6989 (or 6985 counting only the distinct ones).

The product of its digits is 4800, while the sum is 28.

The square root of 55864 is about 236.3556642012. The cubic root of 55864 is about 38.2276272828.

Subtracting from 55864 its reverse (46855), we obtain a palindrome (9009).

It can be divided in two parts, 55 and 864, that added together give a palindrome (919).

The spelling of 55864 in words is "fifty-five thousand, eight hundred sixty-four".