422555401 has 2 divisors, whose sum is σ = 422555402. Its totient is φ = 422555400.

The previous prime is 422555387. The next prime is 422555443. The reversal of 422555401 is 104555224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 285103225 + 137452176 = 16885^2 + 11724^2 .

It is a cyclic number.

It is not a de Polignac number, because 422555401 - 2⁵ = 422555369 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 422555401.

It is not a weakly prime, because it can be changed into another prime (422555461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211277700 + 211277701.

It is an arithmetic number, because the mean of its divisors is an integer number (211277701).

Almost surely, 2^422555401 is an apocalyptic number.

It is an amenable number.

422555401 is a deficient number, since it is larger than the sum of its proper divisors (1).

422555401 is an equidigital number, since it uses as much as digits as its factorization.

422555401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 422555401 is about 20556.1523880322. The cubic root of 422555401 is about 750.4029840256.

The spelling of 422555401 in words is "four hundred twenty-two million, five hundred fifty-five thousand, four hundred one".