54432591 has 4 divisors (see below), whose sum is σ = 72576792. Its totient is φ = 36288392.

The previous prime is 54432571. The next prime is 54432593. The reversal of 54432591 is 19523445.

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 54432591 - 2⁷ = 54432463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54432593) 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, 9072096 + ... + 9072101.

It is an arithmetic number, because the mean of its divisors is an integer number (18144198).

Almost surely, 2^54432591 is an apocalyptic number.

54432591 is a deficient number, since it is larger than the sum of its proper divisors (18144201).

54432591 is a wasteful number, since it uses less digits than its factorization.

54432591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18144200.

The product of its digits is 21600, while the sum is 33.

The square root of 54432591 is about 7377.8446039477. The cubic root of 54432591 is about 378.9829474625.

The spelling of 54432591 in words is "fifty-four million, four hundred thirty-two thousand, five hundred ninety-one".