55426688 has 64 divisors (see below), whose sum is σ = 117357120. Its totient is φ = 26019840.

The previous prime is 55426687. The next prime is 55426691. The reversal of 55426688 is 88662455.

55426688 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 (64).

It is not an unprimeable number, because it can be changed into a prime (55426687) 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, 197108 + ... + 197388.

It is an arithmetic number, because the mean of its divisors is an integer number (1833705).

Almost surely, 2^55426688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55426688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58678560).

55426688 is an abundant number, since it is smaller than the sum of its proper divisors (61930432).

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

55426688 is a wasteful number, since it uses less digits than its factorization.

55426688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385 (or 373 counting only the distinct ones).

The product of its digits is 460800, while the sum is 44.

The square root of 55426688 is about 7444.9102076519. The cubic root of 55426688 is about 381.2761527164.

The spelling of 55426688 in words is "fifty-five million, four hundred twenty-six thousand, six hundred eighty-eight".