55258368 has 144 divisors (see below), whose sum is σ = 166397952. Its totient is φ = 16128000.

The previous prime is 55258363. The next prime is 55258421. The reversal of 55258368 is 86385255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55258361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 261783 + ... + 261993.

Almost surely, 2^55258368 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 55258368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83198976).

55258368 is an abundant number, since it is smaller than the sum of its proper divisors (111139584).

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

55258368 is a wasteful number, since it uses less digits than its factorization.

55258368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272 (or 258 counting only the distinct ones).

The product of its digits is 288000, while the sum is 42.

The square root of 55258368 is about 7433.5972449414. The cubic root of 55258368 is about 380.8898076909.

The spelling of 55258368 in words is "fifty-five million, two hundred fifty-eight thousand, three hundred sixty-eight".