55231178 has 8 divisors (see below), whose sum is σ = 84773568. Its totient is φ = 26973324.

The previous prime is 55231151. The next prime is 55231193. The reversal of 55231178 is 87113255.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321026 + ... + 321197.

It is an arithmetic number, because the mean of its divisors is an integer number (10596696).

Almost surely, 2^55231178 is an apocalyptic number.

55231178 is a deficient number, since it is larger than the sum of its proper divisors (29542390).

55231178 is a wasteful number, since it uses less digits than its factorization.

55231178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642268.

The product of its digits is 8400, while the sum is 32.

The square root of 55231178 is about 7431.7681610771. The cubic root of 55231178 is about 380.8273248891.

The spelling of 55231178 in words is "fifty-five million, two hundred thirty-one thousand, one hundred seventy-eight".