22344457 has 2 divisors, whose sum is σ = 22344458. Its totient is φ = 22344456.

The previous prime is 22344451. The next prime is 22344461. The reversal of 22344457 is 75444322.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19749136 + 2595321 = 4444^2 + 1611^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22344457 is a prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (22344451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11172228 + 11172229.

It is an arithmetic number, because the mean of its divisors is an integer number (11172229).

Almost surely, 2^22344457 is an apocalyptic number.

It is an amenable number.

22344457 is a deficient number, since it is larger than the sum of its proper divisors (1).

22344457 is an equidigital number, since it uses as much as digits as its factorization.

22344457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 31.

The square root of 22344457 is about 4726.9923841699. The cubic root of 22344457 is about 281.6587635159.

Adding to 22344457 its reverse (75444322), we get a palindrome (97788779).

It can be divided in two parts, 22344 and 457, that added together give a square (22801 = 151²).

The spelling of 22344457 in words is "twenty-two million, three hundred forty-four thousand, four hundred fifty-seven".