54219866 has 8 divisors (see below), whose sum is σ = 81361044. Its totient is φ = 27099520.

The previous prime is 54219859. The next prime is 54219871. The reversal of 54219866 is 66891245.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 52200625 + 2019241 = 7225^2 + 1421^2 .

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, 7676 + ... + 12936.

Almost surely, 2^54219866 is an apocalyptic number.

54219866 is a deficient number, since it is larger than the sum of its proper divisors (27141178).

54219866 is a wasteful number, since it uses less digits than its factorization.

54219866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10416.

The product of its digits is 103680, while the sum is 41.

The square root of 54219866 is about 7363.4140179675. The cubic root of 54219866 is about 378.4886088337.

The spelling of 54219866 in words is "fifty-four million, two hundred nineteen thousand, eight hundred sixty-six".