22374991 has 2 divisors, whose sum is σ = 22374992. Its totient is φ = 22374990.

The previous prime is 22374959. The next prime is 22375013. The reversal of 22374991 is 19947322.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22374991 - 2⁵ = 22374959 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22374991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22372991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11187495 + 11187496.

It is an arithmetic number, because the mean of its divisors is an integer number (11187496).

Almost surely, 2^22374991 is an apocalyptic number.

22374991 is a deficient number, since it is larger than the sum of its proper divisors (1).

22374991 is an equidigital number, since it uses as much as digits as its factorization.

22374991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 37.

The square root of 22374991 is about 4730.2210307765. The cubic root of 22374991 is about 281.7870019457.

The spelling of 22374991 in words is "twenty-two million, three hundred seventy-four thousand, nine hundred ninety-one".