422223257 has 6 divisors (see below), whose sum is σ = 426180222. Its totient is φ = 418270272.

The previous prime is 422223253. The next prime is 422223287. The reversal of 422223257 is 752322224.

It can be written as a sum of positive squares in 3 ways, for example, as 26173456 + 396049801 = 5116^2 + 19901^2 .

It is not a de Polignac number, because 422223257 - 2² = 422223253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (422223253) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 217463 + ... + 219395.

It is an arithmetic number, because the mean of its divisors is an integer number (71030037).

Almost surely, 2^422223257 is an apocalyptic number.

It is an amenable number.

422223257 is a deficient number, since it is larger than the sum of its proper divisors (3956965).

422223257 is an frugal number, since it uses more digits than its factorization.

422223257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3979 (or 2046 counting only the distinct ones).

The product of its digits is 13440, while the sum is 29.

The square root of 422223257 is about 20548.0718560161. The cubic root of 422223257 is about 750.2063177573.

The spelling of 422223257 in words is "four hundred twenty-two million, two hundred twenty-three thousand, two hundred fifty-seven".