55588878 has 48 divisors (see below), whose sum is σ = 128129040. Its totient is φ = 17357568.

The previous prime is 55588867. The next prime is 55588913. The reversal of 55588878 is 87888555.

55588878 is a `hidden beast` number, since 5 + 558 + 8 + 87 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 118801 + ... + 119267.

It is an arithmetic number, because the mean of its divisors is an integer number (2669355).

Almost surely, 2^55588878 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55588878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64064520).

55588878 is an abundant number, since it is smaller than the sum of its proper divisors (72540162).

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

55588878 is a wasteful number, since it uses less digits than its factorization.

55588878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881 (or 878 counting only the distinct ones).

The product of its digits is 3584000, while the sum is 54.

The square root of 55588878 is about 7455.7949274373. The cubic root of 55588878 is about 381.6476882901.

The spelling of 55588878 in words is "fifty-five million, five hundred eighty-eight thousand, eight hundred seventy-eight".