535956521 has 2 divisors, whose sum is σ = 535956522. Its totient is φ = 535956520.

The previous prime is 535956457. The next prime is 535956523. The reversal of 535956521 is 125659535.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 300640921 + 235315600 = 17339^2 + 15340^2 .

It is a cyclic number.

It is not a de Polignac number, because 535956521 - 2⁶ = 535956457 is a prime.

It is a Sophie Germain prime.

Together with 535956523, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (535956523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 267978260 + 267978261.

It is an arithmetic number, because the mean of its divisors is an integer number (267978261).

Almost surely, 2^535956521 is an apocalyptic number.

It is an amenable number.

535956521 is a deficient number, since it is larger than the sum of its proper divisors (1).

535956521 is an equidigital number, since it uses as much as digits as its factorization.

535956521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 202500, while the sum is 41.

The square root of 535956521 is about 23150.7347831554. The cubic root of 535956521 is about 812.2876553099.

The spelling of 535956521 in words is "five hundred thirty-five million, nine hundred fifty-six thousand, five hundred twenty-one".