54232221 has 8 divisors (see below), whose sum is σ = 72347904. Its totient is φ = 36135680.

The previous prime is 54232181. The next prime is 54232223. The reversal of 54232221 is 12223245.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 54232221 - 2¹¹ = 54230173 is a prime.

It is a super-2 number, since 2×54232221² = 5882267589185682, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54232223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4285 + ... + 11261.

It is an arithmetic number, because the mean of its divisors is an integer number (9043488).

Almost surely, 2^54232221 is an apocalyptic number.

It is an amenable number.

54232221 is a deficient number, since it is larger than the sum of its proper divisors (18115683).

54232221 is a wasteful number, since it uses less digits than its factorization.

54232221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9571.

The product of its digits is 960, while the sum is 21.

The square root of 54232221 is about 7364.2529152657. The cubic root of 54232221 is about 378.5173551953.

Adding to 54232221 its reverse (12223245), we get a palindrome (66455466).

The spelling of 54232221 in words is "fifty-four million, two hundred thirty-two thousand, two hundred twenty-one".