422555501 has 2 divisors, whose sum is σ = 422555502. Its totient is φ = 422555500.

The previous prime is 422555461. The next prime is 422555509. The reversal of 422555501 is 105555224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 340218025 + 82337476 = 18445^2 + 9074^2 .

It is a cyclic number.

It is not a de Polignac number, because 422555501 - 2¹⁸ = 422293357 is a prime.

It is a super-2 number, since 2×422555501² = 357106302850722002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422555509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211277750 + 211277751.

It is an arithmetic number, because the mean of its divisors is an integer number (211277751).

Almost surely, 2^422555501 is an apocalyptic number.

It is an amenable number.

422555501 is a deficient number, since it is larger than the sum of its proper divisors (1).

422555501 is an equidigital number, since it uses as much as digits as its factorization.

422555501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 422555501 is about 20556.1548203938. The cubic root of 422555501 is about 750.4030432213.

The spelling of 422555501 in words is "four hundred twenty-two million, five hundred fifty-five thousand, five hundred one".