530861491 has 2 divisors, whose sum is σ = 530861492. Its totient is φ = 530861490.

The previous prime is 530861483. The next prime is 530861509. The reversal of 530861491 is 194168035.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 530861491 - 2³ = 530861483 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 530861491.

It is not a weakly prime, because it can be changed into another prime (530862491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265430745 + 265430746.

It is an arithmetic number, because the mean of its divisors is an integer number (265430746).

Almost surely, 2^530861491 is an apocalyptic number.

530861491 is a deficient number, since it is larger than the sum of its proper divisors (1).

530861491 is an equidigital number, since it uses as much as digits as its factorization.

530861491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 530861491 is about 23040.4316582828. The cubic root of 530861491 is about 809.7054718441.

The spelling of 530861491 in words is "five hundred thirty million, eight hundred sixty-one thousand, four hundred ninety-one".