22452251 has 2 divisors, whose sum is σ = 22452252. Its totient is φ = 22452250.

The previous prime is 22452239. The next prime is 22452289. The reversal of 22452251 is 15225422.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22452251 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22452151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11226125 + 11226126.

It is an arithmetic number, because the mean of its divisors is an integer number (11226126).

Almost surely, 2^22452251 is an apocalyptic number.

22452251 is a deficient number, since it is larger than the sum of its proper divisors (1).

22452251 is an equidigital number, since it uses as much as digits as its factorization.

22452251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1600, while the sum is 23.

The square root of 22452251 is about 4738.3806305530. The cubic root of 22452251 is about 282.1109626531.

Adding to 22452251 its reverse (15225422), we get a palindrome (37677673).

The spelling of 22452251 in words is "twenty-two million, four hundred fifty-two thousand, two hundred fifty-one".