55751808 has 96 divisors (see below), whose sum is σ = 172326960. Its totient is φ = 15923712.

The previous prime is 55751807. The next prime is 55751819. The reversal of 55751808 is 80815755.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (55751803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17335 + ... + 20297.

Almost surely, 2^55751808 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 55751808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86163480).

55751808 is an abundant number, since it is smaller than the sum of its proper divisors (116575152).

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

55751808 is a wasteful number, since it uses less digits than its factorization.

55751808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2994 (or 2975 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 39.

The square root of 55751808 is about 7466.7133331875. The cubic root of 55751808 is about 382.0201920926.

The spelling of 55751808 in words is "fifty-five million, seven hundred fifty-one thousand, eight hundred eight".