426000557 has 2 divisors, whose sum is σ = 426000558. Its totient is φ = 426000556.

The previous prime is 426000551. The next prime is 426000581. The reversal of 426000557 is 755000624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 374577316 + 51423241 = 19354^2 + 7171^2 .

It is a cyclic number.

It is not a de Polignac number, because 426000557 - 2⁸ = 426000301 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426000551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213000278 + 213000279.

It is an arithmetic number, because the mean of its divisors is an integer number (213000279).

Almost surely, 2^426000557 is an apocalyptic number.

It is an amenable number.

426000557 is a deficient number, since it is larger than the sum of its proper divisors (1).

426000557 is an equidigital number, since it uses as much as digits as its factorization.

426000557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 426000557 is about 20639.7809339150. The cubic root of 426000557 is about 752.4368483038.

The spelling of 426000557 in words is "four hundred twenty-six million, five hundred fifty-seven", and thus it is an aban number.