55989078 has 8 divisors (see below), whose sum is σ = 111978168. Its totient is φ = 18663024.

The previous prime is 55989071. The next prime is 55989091. The reversal of 55989078 is 87098955.

It is a sphenic number, since it is the product of 3 distinct primes.

55989078 is an admirable number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55989078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55989071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4665751 + ... + 4665762.

It is an arithmetic number, because the mean of its divisors is an integer number (13997271).

Almost surely, 2^55989078 is an apocalyptic number.

55989078 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

55989078 is a wasteful number, since it uses less digits than its factorization.

55989078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9331518.

The product of its (nonzero) digits is 907200, while the sum is 51.

The square root of 55989078 is about 7482.5849811412. The cubic root of 55989078 is about 382.5613622773.

The spelling of 55989078 in words is "fifty-five million, nine hundred eighty-nine thousand, seventy-eight".