422657081 has 16 divisors (see below), whose sum is σ = 527413248. Its totient is φ = 329053200.

The previous prime is 422657063. The next prime is 422657089. The reversal of 422657081 is 180756224.

It is a de Polignac number, because none of the positive numbers 2^k-422657081 is a prime.

It is a super-2 number, since 2×422657081² = 357278016238881122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (422657089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138866 + ... + 141876.

It is an arithmetic number, because the mean of its divisors is an integer number (32963328).

Almost surely, 2^422657081 is an apocalyptic number.

It is an amenable number.

422657081 is a deficient number, since it is larger than the sum of its proper divisors (104756167).

422657081 is a wasteful number, since it uses less digits than its factorization.

422657081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4852.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 422657081 is about 20558.6254647532. The cubic root of 422657081 is about 750.4631693141.

The spelling of 422657081 in words is "four hundred twenty-two million, six hundred fifty-seven thousand, eighty-one".