22451449 has 2 divisors, whose sum is σ = 22451450. Its totient is φ = 22451448.

The previous prime is 22451437. The next prime is 22451459. The reversal of 22451449 is 94415422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19669225 + 2782224 = 4435^2 + 1668^2 .

It is a cyclic number.

It is not a de Polignac number, because 22451449 - 2⁷ = 22451321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22451449.

It is not a weakly prime, because it can be changed into another prime (22451459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11225724 + 11225725.

It is an arithmetic number, because the mean of its divisors is an integer number (11225725).

Almost surely, 2^22451449 is an apocalyptic number.

It is an amenable number.

22451449 is a deficient number, since it is larger than the sum of its proper divisors (1).

22451449 is an equidigital number, since it uses as much as digits as its factorization.

22451449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 31.

The square root of 22451449 is about 4738.2960017289. The cubic root of 22451449 is about 282.1076035885.

The spelling of 22451449 in words is "twenty-two million, four hundred fifty-one thousand, four hundred forty-nine".