55149178 has 8 divisors (see below), whose sum is σ = 94541472. Its totient is φ = 23635356.

The previous prime is 55149167. The next prime is 55149181. The reversal of 55149178 is 87194155.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 55149178.

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, 1969600 + ... + 1969627.

It is an arithmetic number, because the mean of its divisors is an integer number (11817684).

Almost surely, 2^55149178 is an apocalyptic number.

55149178 is a deficient number, since it is larger than the sum of its proper divisors (39392294).

55149178 is a wasteful number, since it uses less digits than its factorization.

55149178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3939236.

The product of its digits is 50400, while the sum is 40.

The square root of 55149178 is about 7426.2492551759. The cubic root of 55149178 is about 380.6387640745.

It can be divided in two parts, 551 and 49178, that added together give a square (49729 = 223²).

The spelling of 55149178 in words is "fifty-five million, one hundred forty-nine thousand, one hundred seventy-eight".