22340251 has 2 divisors, whose sum is σ = 22340252. Its totient is φ = 22340250.

The previous prime is 22340249. The next prime is 22340309. The reversal of 22340251 is 15204322.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22340251 - 2¹ = 22340249 is a prime.

Together with 22340249, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (22340051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11170125 + 11170126.

It is an arithmetic number, because the mean of its divisors is an integer number (11170126).

Almost surely, 2^22340251 is an apocalyptic number.

22340251 is a deficient number, since it is larger than the sum of its proper divisors (1).

22340251 is an equidigital number, since it uses as much as digits as its factorization.

22340251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 22340251 is about 4726.5474714637. The cubic root of 22340251 is about 281.6410897650.

Adding to 22340251 its reverse (15204322), we get a palindrome (37544573).

The spelling of 22340251 in words is "twenty-two million, three hundred forty thousand, two hundred fifty-one".