422561515 has 4 divisors (see below), whose sum is σ = 507073824. Its totient is φ = 338049208.

The previous prime is 422561509. The next prime is 422561519. The reversal of 422561515 is 515165224.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 422561515 - 2³ = 422561507 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (422561519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42256147 + ... + 42256156.

It is an arithmetic number, because the mean of its divisors is an integer number (126768456).

Almost surely, 2^422561515 is an apocalyptic number.

422561515 is a deficient number, since it is larger than the sum of its proper divisors (84512309).

422561515 is an equidigital number, since it uses as much as digits as its factorization.

422561515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84512308.

The product of its digits is 12000, while the sum is 31.

The square root of 422561515 is about 20556.3011020952. The cubic root of 422561515 is about 750.4066032290.

The spelling of 422561515 in words is "four hundred twenty-two million, five hundred sixty-one thousand, five hundred fifteen".