55323888 has 80 divisors (see below), whose sum is σ = 147847680. Its totient is φ = 17817088.

The previous prime is 55323869. The next prime is 55323907. The reversal of 55323888 is 88832355.

It is an interprime number because it is at equal distance from previous prime (55323869) and next prime (55323907).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 308983 + ... + 309161.

It is an arithmetic number, because the mean of its divisors is an integer number (1848096).

Almost surely, 2^55323888 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 55323888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73923840).

55323888 is an abundant number, since it is smaller than the sum of its proper divisors (92523792).

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

55323888 is a wasteful number, since it uses less digits than its factorization.

55323888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374 (or 368 counting only the distinct ones).

The product of its digits is 230400, while the sum is 42.

The square root of 55323888 is about 7438.0029577838. The cubic root of 55323888 is about 381.0402889312.

The spelling of 55323888 in words is "fifty-five million, three hundred twenty-three thousand, eight hundred eighty-eight".