22819451 has 2 divisors, whose sum is σ = 22819452. Its totient is φ = 22819450.

The previous prime is 22819403. The next prime is 22819453. The reversal of 22819451 is 15491822.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22819451 - 2¹⁸ = 22557307 is a prime.

Together with 22819453, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22819453) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11409725 + 11409726.

It is an arithmetic number, because the mean of its divisors is an integer number (11409726).

Almost surely, 2^22819451 is an apocalyptic number.

22819451 is a deficient number, since it is larger than the sum of its proper divisors (1).

22819451 is an equidigital number, since it uses as much as digits as its factorization.

22819451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 32.

The square root of 22819451 is about 4776.9709021513. The cubic root of 22819451 is about 283.6406012189.

The spelling of 22819451 in words is "twenty-two million, eight hundred nineteen thousand, four hundred fifty-one".