54731666 has 32 divisors (see below), whose sum is σ = 95109120. Its totient is φ = 23360400.

The previous prime is 54731659. The next prime is 54731681. The reversal of 54731666 is 66613745.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52571 + ... + 53601.

It is an arithmetic number, because the mean of its divisors is an integer number (2972160).

Almost surely, 2^54731666 is an apocalyptic number.

54731666 is a deficient number, since it is larger than the sum of its proper divisors (40377454).

54731666 is a wasteful number, since it uses less digits than its factorization.

54731666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1190.

The product of its digits is 90720, while the sum is 38.

The square root of 54731666 is about 7398.0852928308. The cubic root of 54731666 is about 379.6757760756.

The spelling of 54731666 in words is "fifty-four million, seven hundred thirty-one thousand, six hundred sixty-six".