55485864 has 64 divisors (see below), whose sum is σ = 176150400. Its totient is φ = 15852672.

The previous prime is 55485863. The next prime is 55485869. The reversal of 55485864 is 46858455.

55485864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×55485864² = 6157362207652992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55485863) 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 15 ways as a sum of consecutive naturals, for example, 16837 + ... + 19860.

It is an arithmetic number, because the mean of its divisors is an integer number (2752350).

Almost surely, 2^55485864 is an apocalyptic number.

55485864 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

55485864 is an abundant number, since it is smaller than the sum of its proper divisors (120664536).

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

55485864 is a wasteful number, since it uses less digits than its factorization.

55485864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36719 (or 36709 counting only the distinct ones).

The product of its digits is 768000, while the sum is 45.

The square root of 55485864 is about 7448.8834062563. The cubic root of 55485864 is about 381.4117935881.

The spelling of 55485864 in words is "fifty-five million, four hundred eighty-five thousand, eight hundred sixty-four".