55891008 has 84 divisors (see below), whose sum is σ = 168666160. Its totient is φ = 17646336.

The previous prime is 55891001. The next prime is 55891039. The reversal of 55891008 is 80019855.

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

It is not an unprimeable number, because it can be changed into a prime (55891001) 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, 8391 + ... + 13497.

Almost surely, 2^55891008 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 55891008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84333080).

55891008 is an abundant number, since it is smaller than the sum of its proper divisors (112775152).

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

55891008 is a wasteful number, since it uses less digits than its factorization.

55891008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5144 (or 5131 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 36.

The square root of 55891008 is about 7476.0288924000. The cubic root of 55891008 is about 382.3378679771.

The spelling of 55891008 in words is "fifty-five million, eight hundred ninety-one thousand, eight".