521492828287 has 2 divisors, whose sum is σ = 521492828288. Its totient is φ = 521492828286.

The previous prime is 521492828273. The next prime is 521492828293. The reversal of 521492828287 is 782828294125.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-521492828287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (521492826287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260746414143 + 260746414144.

It is an arithmetic number, because the mean of its divisors is an integer number (260746414144).

Almost surely, 2^521492828287 is an apocalyptic number.

521492828287 is a deficient number, since it is larger than the sum of its proper divisors (1).

521492828287 is an equidigital number, since it uses as much as digits as its factorization.

521492828287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10321920, while the sum is 58.

The spelling of 521492828287 in words is "five hundred twenty-one billion, four hundred ninety-two million, eight hundred twenty-eight thousand, two hundred eighty-seven".