521852971 has 2 divisors, whose sum is σ = 521852972. Its totient is φ = 521852970.

The previous prime is 521852963. The next prime is 521853001. The reversal of 521852971 is 179258125.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 521852971 - 2³ = 521852963 is a prime.

It is not a weakly prime, because it can be changed into another prime (521852951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260926485 + 260926486.

It is an arithmetic number, because the mean of its divisors is an integer number (260926486).

Almost surely, 2^521852971 is an apocalyptic number.

521852971 is a deficient number, since it is larger than the sum of its proper divisors (1).

521852971 is an equidigital number, since it uses as much as digits as its factorization.

521852971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50400, while the sum is 40.

The square root of 521852971 is about 22844.1014487329. The cubic root of 521852971 is about 805.0991845692.

The spelling of 521852971 in words is "five hundred twenty-one million, eight hundred fifty-two thousand, nine hundred seventy-one".