22651247 has 2 divisors, whose sum is σ = 22651248. Its totient is φ = 22651246.

The previous prime is 22651241. The next prime is 22651253. The reversal of 22651247 is 74215622.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (22651241) and next prime (22651253).

It is a cyclic number.

It is not a de Polignac number, because 22651247 - 2⁴ = 22651231 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22651241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11325623 + 11325624.

It is an arithmetic number, because the mean of its divisors is an integer number (11325624).

Almost surely, 2^22651247 is an apocalyptic number.

22651247 is a deficient number, since it is larger than the sum of its proper divisors (1).

22651247 is an equidigital number, since it uses as much as digits as its factorization.

22651247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 29.

The square root of 22651247 is about 4759.3326212821. The cubic root of 22651247 is about 282.9419693139.

Adding to 22651247 its reverse (74215622), we get a palindrome (96866869).

The spelling of 22651247 in words is "twenty-two million, six hundred fifty-one thousand, two hundred forty-seven".