54432221 has 4 divisors (see below), whose sum is σ = 55198944. Its totient is φ = 53665500.

The previous prime is 54432211. The next prime is 54432227. The reversal of 54432221 is 12223445.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 54432221 - 2¹⁰ = 54431197 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54432227) 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, 383255 + ... + 383396.

It is an arithmetic number, because the mean of its divisors is an integer number (13799736).

Almost surely, 2^54432221 is an apocalyptic number.

It is an amenable number.

54432221 is a deficient number, since it is larger than the sum of its proper divisors (766723).

54432221 is an equidigital number, since it uses as much as digits as its factorization.

54432221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766722.

The product of its digits is 1920, while the sum is 23.

The square root of 54432221 is about 7377.8195288310. The cubic root of 54432221 is about 378.9820887612.

Adding to 54432221 its reverse (12223445), we get a palindrome (66655666).

The spelling of 54432221 in words is "fifty-four million, four hundred thirty-two thousand, two hundred twenty-one".