22662251 has 2 divisors, whose sum is σ = 22662252. Its totient is φ = 22662250.

The previous prime is 22662203. The next prime is 22662257. The reversal of 22662251 is 15226622.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22662251 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22662251.

It is not a weakly prime, because it can be changed into another prime (22662257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11331125 + 11331126.

It is an arithmetic number, because the mean of its divisors is an integer number (11331126).

Almost surely, 2^22662251 is an apocalyptic number.

22662251 is a deficient number, since it is larger than the sum of its proper divisors (1).

22662251 is an equidigital number, since it uses as much as digits as its factorization.

22662251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 26.

The square root of 22662251 is about 4760.4885253512. The cubic root of 22662251 is about 282.9877797334.

Adding to 22662251 its reverse (15226622), we get a palindrome (37888873).

The spelling of 22662251 in words is "twenty-two million, six hundred sixty-two thousand, two hundred fifty-one".