422656161 has 4 divisors (see below), whose sum is σ = 563541552. Its totient is φ = 281770772.

The previous prime is 422656151. The next prime is 422656183. The reversal of 422656161 is 161656224.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-422656161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (422656141) 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, 70442691 + ... + 70442696.

It is an arithmetic number, because the mean of its divisors is an integer number (140885388).

Almost surely, 2^422656161 is an apocalyptic number.

It is an amenable number.

422656161 is a deficient number, since it is larger than the sum of its proper divisors (140885391).

422656161 is a wasteful number, since it uses less digits than its factorization.

422656161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140885390.

The product of its digits is 17280, while the sum is 33.

The square root of 422656161 is about 20558.6030897043. The cubic root of 422656161 is about 750.4626248013.

The spelling of 422656161 in words is "four hundred twenty-two million, six hundred fifty-six thousand, one hundred sixty-one".