54405231 has 4 divisors (see below), whose sum is σ = 72540312. Its totient is φ = 36270152.

The previous prime is 54405199. The next prime is 54405269. The reversal of 54405231 is 13250445.

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 54405231 - 2⁵ = 54405199 is a prime.

It is a super-2 number, since 2×54405231² = 5919858320326722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54405271) 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, 9067536 + ... + 9067541.

It is an arithmetic number, because the mean of its divisors is an integer number (18135078).

Almost surely, 2^54405231 is an apocalyptic number.

54405231 is a deficient number, since it is larger than the sum of its proper divisors (18135081).

54405231 is a wasteful number, since it uses less digits than its factorization.

54405231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18135080.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 54405231 is about 7375.9901708177. The cubic root of 54405231 is about 378.9194394855.

Adding to 54405231 its reverse (13250445), we get a palindrome (67655676).

The spelling of 54405231 in words is "fifty-four million, four hundred five thousand, two hundred thirty-one".