422245251 has 16 divisors (see below), whose sum is σ = 640097920. Its totient is φ = 274949640.

The previous prime is 422245237. The next prime is 422245253. The reversal of 422245251 is 152542224.

It is not a de Polignac number, because 422245251 - 2¹⁰ = 422244227 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (422245253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180685 + ... + 183006.

It is an arithmetic number, because the mean of its divisors is an integer number (40006120).

Almost surely, 2^422245251 is an apocalyptic number.

422245251 is a deficient number, since it is larger than the sum of its proper divisors (217852669).

422245251 is a wasteful number, since it uses less digits than its factorization.

422245251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363743 (or 363737 counting only the distinct ones).

The product of its digits is 6400, while the sum is 27.

The square root of 422245251 is about 20548.6070330813. The cubic root of 422245251 is about 750.2193438448.

Adding to 422245251 its reverse (152542224), we get a palindrome (574787475).

The spelling of 422245251 in words is "four hundred twenty-two million, two hundred forty-five thousand, two hundred fifty-one".