54218999 has 4 divisors (see below), whose sum is σ = 54246336. Its totient is φ = 54191664.

The previous prime is 54218953. The next prime is 54219007. The reversal of 54218999 is 99981245.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 54218999 - 2²⁴ = 37441783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54218909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10439 + ... + 14744.

It is an arithmetic number, because the mean of its divisors is an integer number (13561584).

Almost surely, 2^54218999 is an apocalyptic number.

54218999 is a deficient number, since it is larger than the sum of its proper divisors (27337).

54218999 is a wasteful number, since it uses less digits than its factorization.

54218999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27336.

The product of its digits is 233280, while the sum is 47.

The square root of 54218999 is about 7363.3551455841. The cubic root of 54218999 is about 378.4865914220.

The spelling of 54218999 in words is "fifty-four million, two hundred eighteen thousand, nine hundred ninety-nine".