531504011 has 2 divisors, whose sum is σ = 531504012. Its totient is φ = 531504010.

The previous prime is 531503971. The next prime is 531504023. The reversal of 531504011 is 110405135.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-531504011 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (531804011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265752005 + 265752006.

It is an arithmetic number, because the mean of its divisors is an integer number (265752006).

Almost surely, 2^531504011 is an apocalyptic number.

531504011 is a deficient number, since it is larger than the sum of its proper divisors (1).

531504011 is an equidigital number, since it uses as much as digits as its factorization.

531504011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 531504011 is about 23054.3707569736. The cubic root of 531504011 is about 810.0320116394.

Adding to 531504011 its reverse (110405135), we get a palindrome (641909146).

The spelling of 531504011 in words is "five hundred thirty-one million, five hundred four thousand, eleven".