521040983 has 2 divisors, whose sum is σ = 521040984. Its totient is φ = 521040982.

The previous prime is 521040959. The next prime is 521041033. The reversal of 521040983 is 389040125.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 521040983 - 2⁸ = 521040727 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (521040913) 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, 260520491 + 260520492.

It is an arithmetic number, because the mean of its divisors is an integer number (260520492).

Almost surely, 2^521040983 is an apocalyptic number.

521040983 is a deficient number, since it is larger than the sum of its proper divisors (1).

521040983 is an equidigital number, since it uses as much as digits as its factorization.

521040983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 521040983 is about 22826.3221522873. The cubic root of 521040983 is about 804.6813975241.

The spelling of 521040983 in words is "five hundred twenty-one million, forty thousand, nine hundred eighty-three".