55173888 has 216 divisors, whose sum is σ = 198971136. Its totient is φ = 14284800.

The previous prime is 55173871. The next prime is 55173889. The reversal of 55173888 is 88837155.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (55173889) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 177253 + ... + 177563.

Almost surely, 2^55173888 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 55173888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99485568).

55173888 is an abundant number, since it is smaller than the sum of its proper divisors (143797248).

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

55173888 is a wasteful number, since it uses less digits than its factorization.

55173888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351 (or 334 counting only the distinct ones).

The product of its digits is 268800, while the sum is 45.

The square root of 55173888 is about 7427.9127620079. The cubic root of 55173888 is about 380.6956049306.

The spelling of 55173888 in words is "fifty-five million, one hundred seventy-three thousand, eight hundred eighty-eight".