22454431 has 2 divisors, whose sum is σ = 22454432. Its totient is φ = 22454430.

The previous prime is 22454387. The next prime is 22454459. The reversal of 22454431 is 13445422.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22454431 - 2⁹ = 22453919 is a prime.

It is a super-2 number, since 2×22454431² = 1008402943067522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22454396 and 22454405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22454461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11227215 + 11227216.

It is an arithmetic number, because the mean of its divisors is an integer number (11227216).

Almost surely, 2^22454431 is an apocalyptic number.

22454431 is a deficient number, since it is larger than the sum of its proper divisors (1).

22454431 is an equidigital number, since it uses as much as digits as its factorization.

22454431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3840, while the sum is 25.

The square root of 22454431 is about 4738.6106613648. The cubic root of 22454431 is about 282.1200928734.

Adding to 22454431 its reverse (13445422), we get a palindrome (35899853).

Subtracting from 22454431 its reverse (13445422), we obtain a palindrome (9009009).

The spelling of 22454431 in words is "twenty-two million, four hundred fifty-four thousand, four hundred thirty-one".