55730808 has 256 divisors, whose sum is σ = 193536000. Its totient is φ = 14515200.

The previous prime is 55730791. The next prime is 55730903. The reversal of 55730808 is 80803755.

It is a happy number.

55730808 is a `hidden beast` number, since 5 + 573 + 0 + 80 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1359268 + ... + 1359308.

It is an arithmetic number, because the mean of its divisors is an integer number (756000).

Almost surely, 2^55730808 is an apocalyptic number.

55730808 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55730808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96768000).

55730808 is an abundant number, since it is smaller than the sum of its proper divisors (137805192).

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

55730808 is a wasteful number, since it uses less digits than its factorization.

55730808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 55730808 is about 7465.3069595295. The cubic root of 55730808 is about 381.9722209636.

The spelling of 55730808 in words is "fifty-five million, seven hundred thirty thousand, eight hundred eight".