54718591 has 4 divisors (see below), whose sum is σ = 54735912. Its totient is φ = 54701272.

The previous prime is 54718571. The next prime is 54718637. The reversal of 54718591 is 19581745.

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 54718591 - 2¹⁵ = 54685823 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 (54718511) 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, 2425 + ... + 10738.

It is an arithmetic number, because the mean of its divisors is an integer number (13683978).

Almost surely, 2^54718591 is an apocalyptic number.

54718591 is a deficient number, since it is larger than the sum of its proper divisors (17321).

54718591 is a wasteful number, since it uses less digits than its factorization.

54718591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17320.

The product of its digits is 50400, while the sum is 40.

The square root of 54718591 is about 7397.2015654570. The cubic root of 54718591 is about 379.6455397335.

The spelling of 54718591 in words is "fifty-four million, seven hundred eighteen thousand, five hundred ninety-one".