22323251 has 2 divisors, whose sum is σ = 22323252. Its totient is φ = 22323250.

The previous prime is 22323241. The next prime is 22323253. The reversal of 22323251 is 15232322.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22323251 is a prime.

It is a super-3 number, since 3×22323251³ (a number of 23 digits) contains 333 as substring.

Together with 22323253, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22323253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11161625 + 11161626.

It is an arithmetic number, because the mean of its divisors is an integer number (11161626).

Almost surely, 2^22323251 is an apocalyptic number.

22323251 is a deficient number, since it is larger than the sum of its proper divisors (1).

22323251 is an equidigital number, since it uses as much as digits as its factorization.

22323251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 20.

The square root of 22323251 is about 4724.7487763901. The cubic root of 22323251 is about 281.5696325926.

Adding to 22323251 its reverse (15232322), we get a palindrome (37555573).

The spelling of 22323251 in words is "twenty-two million, three hundred twenty-three thousand, two hundred fifty-one".