521344793 has 2 divisors, whose sum is σ = 521344794. Its totient is φ = 521344792.

The previous prime is 521344753. The next prime is 521344799. The reversal of 521344793 is 397443125.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 496264729 + 25080064 = 22277^2 + 5008^2 .

It is a cyclic number.

It is not a de Polignac number, because 521344793 - 2¹⁰ = 521343769 is a prime.

It is not a weakly prime, because it can be changed into another prime (521344799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260672396 + 260672397.

It is an arithmetic number, because the mean of its divisors is an integer number (260672397).

Almost surely, 2^521344793 is an apocalyptic number.

It is an amenable number.

521344793 is a deficient number, since it is larger than the sum of its proper divisors (1).

521344793 is an equidigital number, since it uses as much as digits as its factorization.

521344793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 38.

The square root of 521344793 is about 22832.9759996370. The cubic root of 521344793 is about 804.8377657454.

The spelling of 521344793 in words is "five hundred twenty-one million, three hundred forty-four thousand, seven hundred ninety-three".