22775407 has 2 divisors, whose sum is σ = 22775408. Its totient is φ = 22775406.

The previous prime is 22775383. The next prime is 22775419. The reversal of 22775407 is 70457722.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22775407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22775507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11387703 + 11387704.

It is an arithmetic number, because the mean of its divisors is an integer number (11387704).

Almost surely, 2^22775407 is an apocalyptic number.

22775407 is a deficient number, since it is larger than the sum of its proper divisors (1).

22775407 is an equidigital number, since it uses as much as digits as its factorization.

22775407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27440, while the sum is 34.

The square root of 22775407 is about 4772.3586411752. The cubic root of 22775407 is about 283.4579980431.

The spelling of 22775407 in words is "twenty-two million, seven hundred seventy-five thousand, four hundred seven".