55808368 has 80 divisors (see below), whose sum is σ = 136491264. Its totient is φ = 21473280.

The previous prime is 55808359. The next prime is 55808369. The reversal of 55808368 is 86380855.

It is a super-2 number, since 2×55808368² = 6229147877646848, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55808369) 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, 119271 + ... + 119737.

Almost surely, 2^55808368 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 55808368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68245632).

55808368 is an abundant number, since it is smaller than the sum of its proper divisors (80682896).

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

55808368 is a wasteful number, since it uses less digits than its factorization.

55808368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590 (or 584 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 43.

The square root of 55808368 is about 7470.4998494077. The cubic root of 55808368 is about 382.1493344480.

The spelling of 55808368 in words is "fifty-five million, eight hundred eight thousand, three hundred sixty-eight".