521314903 has 2 divisors, whose sum is σ = 521314904. Its totient is φ = 521314902.

The previous prime is 521314897. The next prime is 521314909. The reversal of 521314903 is 309413125.

It is a balanced prime because it is at equal distance from previous prime (521314897) and next prime (521314909).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-521314903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (521314909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260657451 + 260657452.

It is an arithmetic number, because the mean of its divisors is an integer number (260657452).

Almost surely, 2^521314903 is an apocalyptic number.

521314903 is a deficient number, since it is larger than the sum of its proper divisors (1).

521314903 is an equidigital number, since it uses as much as digits as its factorization.

521314903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 521314903 is about 22832.3214544645. The cubic root of 521314903 is about 804.8223843313.

The spelling of 521314903 in words is "five hundred twenty-one million, three hundred fourteen thousand, nine hundred three".