54978166 has 12 divisors (see below), whose sum is σ = 84435372. Its totient is φ = 26847996.

The previous prime is 54978151. The next prime is 54978167. The reversal of 54978166 is 66187945.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54978167) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3736 + ... + 11131.

It is an arithmetic number, because the mean of its divisors is an integer number (7036281).

Almost surely, 2^54978166 is an apocalyptic number.

54978166 is a deficient number, since it is larger than the sum of its proper divisors (29457206).

54978166 is a wasteful number, since it uses less digits than its factorization.

54978166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14955 (or 14912 counting only the distinct ones).

The product of its digits is 362880, while the sum is 46.

The square root of 54978166 is about 7414.7262929929. The cubic root of 54978166 is about 380.2449159828.

The spelling of 54978166 in words is "fifty-four million, nine hundred seventy-eight thousand, one hundred sixty-six".