521754713 has 2 divisors, whose sum is σ = 521754714. Its totient is φ = 521754712.

The previous prime is 521754703. The next prime is 521754719. The reversal of 521754713 is 317457125.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 294740224 + 227014489 = 17168^2 + 15067^2 .

It is a cyclic number.

It is not a de Polignac number, because 521754713 - 2²⁸ = 253319257 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (521754719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260877356 + 260877357.

It is an arithmetic number, because the mean of its divisors is an integer number (260877357).

Almost surely, 2^521754713 is an apocalyptic number.

It is an amenable number.

521754713 is a deficient number, since it is larger than the sum of its proper divisors (1).

521754713 is an equidigital number, since it uses as much as digits as its factorization.

521754713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29400, while the sum is 35.

The square root of 521754713 is about 22841.9507266783. The cubic root of 521754713 is about 805.0486515611.

The spelling of 521754713 in words is "five hundred twenty-one million, seven hundred fifty-four thousand, seven hundred thirteen".