422561 has 8 divisors (see below), whose sum is σ = 447744. Its totient is φ = 398160.

The previous prime is 422557. The next prime is 422563. The reversal of 422561 is 165224.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 422561 - 2² = 422557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (422563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1175 + ... + 1491.

It is an arithmetic number, because the mean of its divisors is an integer number (55968).

2⁴²²⁵⁶¹ is an apocalyptic number.

It is an amenable number.

422561 is a deficient number, since it is larger than the sum of its proper divisors (25183).

422561 is a wasteful number, since it uses less digits than its factorization.

422561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391.

The product of its digits is 480, while the sum is 20.

The square root of 422561 is about 650.0469213834. The cubic root of 422561 is about 75.0406298374.

Adding to 422561 its reverse (165224), we get a palindrome (587785).

The spelling of 422561 in words is "four hundred twenty-two thousand, five hundred sixty-one".