531121519 has 2 divisors, whose sum is σ = 531121520. Its totient is φ = 531121518.

The previous prime is 531121499. The next prime is 531121523. The reversal of 531121519 is 915121135.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 531121519 - 2⁹ = 531121007 is a prime.

It is a super-2 number, since 2×531121519² = 564180135889734722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531121579) 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, 265560759 + 265560760.

It is an arithmetic number, because the mean of its divisors is an integer number (265560760).

Almost surely, 2^531121519 is an apocalyptic number.

531121519 is a deficient number, since it is larger than the sum of its proper divisors (1).

531121519 is an equidigital number, since it uses as much as digits as its factorization.

531121519 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1350, while the sum is 28.

The square root of 531121519 is about 23046.0738304814. The cubic root of 531121519 is about 809.8376543001.

The spelling of 531121519 in words is "five hundred thirty-one million, one hundred twenty-one thousand, five hundred nineteen".