22554431 has 8 divisors (see below), whose sum is σ = 23394720. Its totient is φ = 21718368.

The previous prime is 22554419. The next prime is 22554449. The reversal of 22554431 is 13445522.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22554431 is a prime.

It is a super-2 number, since 2×22554431² = 1017404715467522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22554431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22554491) 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, 13325 + ... + 14921.

It is an arithmetic number, because the mean of its divisors is an integer number (2924340).

Almost surely, 2^22554431 is an apocalyptic number.

22554431 is a deficient number, since it is larger than the sum of its proper divisors (840289).

22554431 is a wasteful number, since it uses less digits than its factorization.

22554431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2113.

The product of its digits is 4800, while the sum is 26.

The square root of 22554431 is about 4749.1505556257. The cubic root of 22554431 is about 282.5382765898.

Adding to 22554431 its reverse (13445522), we get a palindrome (35999953).

The spelling of 22554431 in words is "twenty-two million, five hundred fifty-four thousand, four hundred thirty-one".