531896557 has 2 divisors, whose sum is σ = 531896558. Its totient is φ = 531896556.

The previous prime is 531896513. The next prime is 531896581. The reversal of 531896557 is 755698135.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 525601476 + 6295081 = 22926^2 + 2509^2 .

It is a cyclic number.

It is not a de Polignac number, because 531896557 - 2²⁷ = 397678829 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 531896557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531896587) 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, 265948278 + 265948279.

It is an arithmetic number, because the mean of its divisors is an integer number (265948279).

Almost surely, 2^531896557 is an apocalyptic number.

It is an amenable number.

531896557 is a deficient number, since it is larger than the sum of its proper divisors (1).

531896557 is an equidigital number, since it uses as much as digits as its factorization.

531896557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1134000, while the sum is 49.

The square root of 531896557 is about 23062.8826689120. The cubic root of 531896557 is about 810.2313808324.

The spelling of 531896557 in words is "five hundred thirty-one million, eight hundred ninety-six thousand, five hundred fifty-seven".