55159888 has 120 divisors (see below), whose sum is σ = 137144000. Its totient is φ = 21422016.

The previous prime is 55159877. The next prime is 55159901. The reversal of 55159888 is 88895155.

It is a super-2 number, since 2×55159888² = 6085226488345088, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2398245 + ... + 2398267.

Almost surely, 2^55159888 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 55159888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68572000).

55159888 is an abundant number, since it is smaller than the sum of its proper divisors (81984112).

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

55159888 is a wasteful number, since it uses less digits than its factorization.

55159888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94 (or 51 counting only the distinct ones).

The product of its digits is 576000, while the sum is 49.

The square root of 55159888 is about 7426.9703109680. The cubic root of 55159888 is about 380.6634025638.

The spelling of 55159888 in words is "fifty-five million, one hundred fifty-nine thousand, eight hundred eighty-eight".