530040521 has 2 divisors, whose sum is σ = 530040522. Its totient is φ = 530040520.

The previous prime is 530040509. The next prime is 530040523. The reversal of 530040521 is 125040035.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 472584121 + 57456400 = 21739^2 + 7580^2 .

It is a cyclic number.

It is not a de Polignac number, because 530040521 - 2¹⁴ = 530024137 is a prime.

Together with 530040523, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 530040493 and 530040502.

It is not a weakly prime, because it can be changed into another prime (530040523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265020260 + 265020261.

It is an arithmetic number, because the mean of its divisors is an integer number (265020261).

Almost surely, 2^530040521 is an apocalyptic number.

It is an amenable number.

530040521 is a deficient number, since it is larger than the sum of its proper divisors (1).

530040521 is an equidigital number, since it uses as much as digits as its factorization.

530040521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 530040521 is about 23022.6089095046. The cubic root of 530040521 is about 809.2878570302.

Adding to 530040521 its reverse (125040035), we get a palindrome (655080556).

The spelling of 530040521 in words is "five hundred thirty million, forty thousand, five hundred twenty-one".