54918187 has 4 divisors (see below), whose sum is σ = 55049056. Its totient is φ = 54787320.

The previous prime is 54918179. The next prime is 54918191. The reversal of 54918187 is 78181945.

It is a happy number.

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 54918187 - 2³ = 54918179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54918107) 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, 64803 + ... + 65644.

It is an arithmetic number, because the mean of its divisors is an integer number (13762264).

Almost surely, 2^54918187 is an apocalyptic number.

54918187 is a deficient number, since it is larger than the sum of its proper divisors (130869).

54918187 is a wasteful number, since it uses less digits than its factorization.

54918187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130868.

The product of its digits is 80640, while the sum is 43.

The square root of 54918187 is about 7410.6806030216. The cubic root of 54918187 is about 380.1065882899.

The spelling of 54918187 in words is "fifty-four million, nine hundred eighteen thousand, one hundred eighty-seven".