426000581 has 2 divisors, whose sum is σ = 426000582. Its totient is φ = 426000580.

The previous prime is 426000557. The next prime is 426000599. The reversal of 426000581 is 185000624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 423330625 + 2669956 = 20575^2 + 1634^2 .

It is a cyclic number.

It is not a de Polignac number, because 426000581 - 2¹⁸ = 425738437 is a prime.

It is a super-2 number, since 2×426000581² = 362952990024675122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 426000581.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426000511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213000290 + 213000291.

It is an arithmetic number, because the mean of its divisors is an integer number (213000291).

Almost surely, 2^426000581 is an apocalyptic number.

It is an amenable number.

426000581 is a deficient number, since it is larger than the sum of its proper divisors (1).

426000581 is an equidigital number, since it uses as much as digits as its factorization.

426000581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 426000581 is about 20639.7815153165. The cubic root of 426000581 is about 752.4368624341.

The spelling of 426000581 in words is "four hundred twenty-six million, five hundred eighty-one", and thus it is an aban number.