422577 has 24 divisors (see below), whose sum is σ = 663936. Its totient is φ = 268272.

The previous prime is 422573. The next prime is 422581. The reversal of 422577 is 775224.

It is an interprime number because it is at equal distance from previous prime (422573) and next prime (422581).

It is not a de Polignac number, because 422577 - 2² = 422573 is a prime.

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

422577 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 422577.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 422577.

It is not an unprimeable number, because it can be changed into a prime (422573) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8968 + ... + 9014.

It is an arithmetic number, because the mean of its divisors is an integer number (27664).

2⁴²²⁵⁷⁷ is an apocalyptic number.

422577 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

422577 is a deficient number, since it is larger than the sum of its proper divisors (241359).

422577 is an equidigital number, since it uses as much as digits as its factorization.

422577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99 (or 87 counting only the distinct ones).

The product of its digits is 3920, while the sum is 27.

The square root of 422577 is about 650.0592280708. The cubic root of 422577 is about 75.0415769472.

422577 divided by its sum of digits (27) gives a palindrome (15651).

It can be divided in two parts, 422 and 577, that added together give a palindrome (999).

The spelling of 422577 in words is "four hundred twenty-two thousand, five hundred seventy-seven".