22775397 has 4 divisors (see below), whose sum is σ = 30367200. Its totient is φ = 15183596.

The previous prime is 22775383. The next prime is 22775407. The reversal of 22775397 is 79357722.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22775397 - 2⁴ = 22775381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22775327) 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 in 3 ways as a sum of consecutive naturals, for example, 3795897 + ... + 3795902.

It is an arithmetic number, because the mean of its divisors is an integer number (7591800).

Almost surely, 2^22775397 is an apocalyptic number.

It is an amenable number.

22775397 is a deficient number, since it is larger than the sum of its proper divisors (7591803).

22775397 is an equidigital number, since it uses as much as digits as its factorization.

22775397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7591802.

The product of its digits is 185220, while the sum is 42.

The square root of 22775397 is about 4772.3575934752. The cubic root of 22775397 is about 283.4579565571.

The spelling of 22775397 in words is "twenty-two million, seven hundred seventy-five thousand, three hundred ninety-seven".