521523283 has 2 divisors, whose sum is σ = 521523284. Its totient is φ = 521523282.

The previous prime is 521523281. The next prime is 521523337. The reversal of 521523283 is 382325125.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 521523283 - 2¹ = 521523281 is a prime.

It is a super-2 number, since 2×521523283² = 543973069422196178, which contains 22 as substring.

Together with 521523281, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (521523281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260761641 + 260761642.

It is an arithmetic number, because the mean of its divisors is an integer number (260761642).

Almost surely, 2^521523283 is an apocalyptic number.

521523283 is a deficient number, since it is larger than the sum of its proper divisors (1).

521523283 is an equidigital number, since it uses as much as digits as its factorization.

521523283 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14400, while the sum is 31.

The square root of 521523283 is about 22836.8842664668. The cubic root of 521523283 is about 804.9296045846.

The spelling of 521523283 in words is "five hundred twenty-one million, five hundred twenty-three thousand, two hundred eighty-three".