22551719 has 2 divisors, whose sum is σ = 22551720. Its totient is φ = 22551718.

The previous prime is 22551713. The next prime is 22551721. The reversal of 22551719 is 91715522.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22551719 - 2¹⁶ = 22486183 is a prime.

It is a super-2 number, since 2×22551719² = 1017160059709922, which contains 22 as substring.

Together with 22551721, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22551713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11275859 + 11275860.

It is an arithmetic number, because the mean of its divisors is an integer number (11275860).

Almost surely, 2^22551719 is an apocalyptic number.

22551719 is a deficient number, since it is larger than the sum of its proper divisors (1).

22551719 is an equidigital number, since it uses as much as digits as its factorization.

22551719 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6300, while the sum is 32.

The square root of 22551719 is about 4748.8650222974. The cubic root of 22551719 is about 282.5269517711.

The spelling of 22551719 in words is "twenty-two million, five hundred fifty-one thousand, seven hundred nineteen".