530721497 has 2 divisors, whose sum is σ = 530721498. Its totient is φ = 530721496.

The previous prime is 530721473. The next prime is 530721551. The reversal of 530721497 is 794127035.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 343879936 + 186841561 = 18544^2 + 13669^2 .

It is a cyclic number.

It is not a de Polignac number, because 530721497 - 2¹⁰ = 530720473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 530721497.

It is not a weakly prime, because it can be changed into another prime (530721427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265360748 + 265360749.

It is an arithmetic number, because the mean of its divisors is an integer number (265360749).

Almost surely, 2^530721497 is an apocalyptic number.

It is an amenable number.

530721497 is a deficient number, since it is larger than the sum of its proper divisors (1).

530721497 is an equidigital number, since it uses as much as digits as its factorization.

530721497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 530721497 is about 23037.3934506489. The cubic root of 530721497 is about 809.6342895141.

The spelling of 530721497 in words is "five hundred thirty million, seven hundred twenty-one thousand, four hundred ninety-seven".