422551961 has 8 divisors (see below), whose sum is σ = 460817280. Its totient is φ = 385109712.

The previous prime is 422551957. The next prime is 422551973. The reversal of 422551961 is 169155224.

It is a happy number.

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

It is not a de Polignac number, because 422551961 - 2² = 422551957 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (422551901) 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, 204695 + ... + 206748.

It is an arithmetic number, because the mean of its divisors is an integer number (57602160).

Almost surely, 2^422551961 is an apocalyptic number.

It is an amenable number.

422551961 is a deficient number, since it is larger than the sum of its proper divisors (38265319).

422551961 is a wasteful number, since it uses less digits than its factorization.

422551961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411535.

The product of its digits is 21600, while the sum is 35.

The square root of 422551961 is about 20556.0687146156. The cubic root of 422551961 is about 750.4009476905.

The spelling of 422551961 in words is "four hundred twenty-two million, five hundred fifty-one thousand, nine hundred sixty-one".