55189068 has 72 divisors (see below), whose sum is σ = 143001600. Its totient is φ = 16552800.

The previous prime is 55189067. The next prime is 55189073. The reversal of 55189068 is 86098155.

It is not an unprimeable number, because it can be changed into a prime (55189063) 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, 277233 + ... + 277431.

Almost surely, 2^55189068 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 55189068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71500800).

55189068 is an abundant number, since it is smaller than the sum of its proper divisors (87812532).

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

55189068 is a wasteful number, since it uses less digits than its factorization.

55189068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419 (or 406 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 42.

The square root of 55189068 is about 7428.9345131048. The cubic root of 55189068 is about 380.7305153419.

The spelling of 55189068 in words is "fifty-five million, one hundred eighty-nine thousand, sixty-eight".