55175978 has 16 divisors (see below), whose sum is σ = 97233696. Its totient is φ = 23150640.

The previous prime is 55175971. The next prime is 55175983. The reversal of 55175978 is 87957155.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55175971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96176 + ... + 96747.

It is an arithmetic number, because the mean of its divisors is an integer number (6077106).

Almost surely, 2^55175978 is an apocalyptic number.

55175978 is a deficient number, since it is larger than the sum of its proper divisors (42057718).

55175978 is a wasteful number, since it uses less digits than its factorization.

55175978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192949.

The product of its digits is 441000, while the sum is 47.

The square root of 55175978 is about 7428.0534462267. The cubic root of 55175978 is about 380.7004118166.

The spelling of 55175978 in words is "fifty-five million, one hundred seventy-five thousand, nine hundred seventy-eight".