426522181 has 2 divisors, whose sum is σ = 426522182. Its totient is φ = 426522180.

The previous prime is 426522179. The next prime is 426522233. The reversal of 426522181 is 181225624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 314352900 + 112169281 = 17730^2 + 10591^2 .

It is a cyclic number.

It is not a de Polignac number, because 426522181 - 2¹ = 426522179 is a prime.

It is a super-2 number, since 2×426522181² = 363842341769993522, which contains 22 as substring.

Together with 426522179, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426522101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213261090 + 213261091.

It is an arithmetic number, because the mean of its divisors is an integer number (213261091).

Almost surely, 2^426522181 is an apocalyptic number.

It is an amenable number.

426522181 is a deficient number, since it is larger than the sum of its proper divisors (1).

426522181 is an equidigital number, since it uses as much as digits as its factorization.

426522181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7680, while the sum is 31.

The square root of 426522181 is about 20652.4134425011. The cubic root of 426522181 is about 752.7438346244.

The spelling of 426522181 in words is "four hundred twenty-six million, five hundred twenty-two thousand, one hundred eighty-one".