22447651 has 2 divisors, whose sum is σ = 22447652. Its totient is φ = 22447650.

The previous prime is 22447603. The next prime is 22447661. The reversal of 22447651 is 15674422.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22447651 - 2²³ = 14059043 is a prime.

It is not a weakly prime, because it can be changed into another prime (22447661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11223825 + 11223826.

It is an arithmetic number, because the mean of its divisors is an integer number (11223826).

Almost surely, 2^22447651 is an apocalyptic number.

22447651 is a deficient number, since it is larger than the sum of its proper divisors (1).

22447651 is an equidigital number, since it uses as much as digits as its factorization.

22447651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440, while the sum is 31.

The square root of 22447651 is about 4737.8952077901. The cubic root of 22447651 is about 282.0916951112.

The spelling of 22447651 in words is "twenty-two million, four hundred forty-seven thousand, six hundred fifty-one".