55138178 has 8 divisors (see below), whose sum is σ = 82741068. Its totient is φ = 27557824.

The previous prime is 55138159. The next prime is 55138183. The reversal of 55138178 is 87183155.

It can be written as a sum of positive squares in 2 ways, for example, as 55100929 + 37249 = 7423^2 + 193^2 .

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

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, 3350 + ... + 11022.

Almost surely, 2^55138178 is an apocalyptic number.

55138178 is a deficient number, since it is larger than the sum of its proper divisors (27602890).

55138178 is a wasteful number, since it uses less digits than its factorization.

55138178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11268.

The product of its digits is 33600, while the sum is 38.

The square root of 55138178 is about 7425.5086021094. The cubic root of 55138178 is about 380.6134551158.

The spelling of 55138178 in words is "fifty-five million, one hundred thirty-eight thousand, one hundred seventy-eight".