426733561 has 2 divisors, whose sum is σ = 426733562. Its totient is φ = 426733560.

The previous prime is 426733547. The next prime is 426733577. The reversal of 426733561 is 165337624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 370947600 + 55785961 = 19260^2 + 7469^2 .

It is a cyclic number.

It is not a de Polignac number, because 426733561 - 2⁵ = 426733529 is a prime.

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 426733561.

It is not a weakly prime, because it can be changed into another prime (426733061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213366780 + 213366781.

It is an arithmetic number, because the mean of its divisors is an integer number (213366781).

Almost surely, 2^426733561 is an apocalyptic number.

It is an amenable number.

426733561 is a deficient number, since it is larger than the sum of its proper divisors (1).

426733561 is an equidigital number, since it uses as much as digits as its factorization.

426733561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 37.

The square root of 426733561 is about 20657.5303703032. The cubic root of 426733561 is about 752.8681647850.

The spelling of 426733561 in words is "four hundred twenty-six million, seven hundred thirty-three thousand, five hundred sixty-one".