55042008 has 128 divisors (see below), whose sum is σ = 164989440. Its totient is φ = 14976000.

The previous prime is 55041991. The next prime is 55042027. The reversal of 55042008 is 80024055.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 420103 + ... + 420233.

It is an arithmetic number, because the mean of its divisors is an integer number (1288980).

Almost surely, 2^55042008 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 55042008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82494720).

55042008 is an abundant number, since it is smaller than the sum of its proper divisors (109947432).

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

55042008 is a wasteful number, since it uses less digits than its factorization.

55042008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249 (or 245 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 55042008 is about 7419.0301252927. The cubic root of 55042008 is about 380.3920423014.

The spelling of 55042008 in words is "fifty-five million, forty-two thousand, eight".