521068477 has 2 divisors, whose sum is σ = 521068478. Its totient is φ = 521068476.

The previous prime is 521068469. The next prime is 521068523. The reversal of 521068477 is 774860125.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 356869881 + 164198596 = 18891^2 + 12814^2 .

It is a cyclic number.

It is not a de Polignac number, because 521068477 - 2³ = 521068469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (521068417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260534238 + 260534239.

It is an arithmetic number, because the mean of its divisors is an integer number (260534239).

Almost surely, 2^521068477 is an apocalyptic number.

It is an amenable number.

521068477 is a deficient number, since it is larger than the sum of its proper divisors (1).

521068477 is an equidigital number, since it uses as much as digits as its factorization.

521068477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 521068477 is about 22826.9243876612. The cubic root of 521068477 is about 804.6955509349.

The spelling of 521068477 in words is "five hundred twenty-one million, sixty-eight thousand, four hundred seventy-seven".