855252571 has 2 divisors, whose sum is σ = 855252572. Its totient is φ = 855252570.

The previous prime is 855252557. The next prime is 855252637. The reversal of 855252571 is 175252558.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 855252571 - 2⁹ = 855252059 is a prime.

It is a super-2 number, since 2×855252571² = 1462913920404220082, which contains 22 as substring.

It is equal to p_43837348 and since 855252571 and 43837348 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (855252971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427626285 + 427626286.

It is an arithmetic number, because the mean of its divisors is an integer number (427626286).

Almost surely, 2^855252571 is an apocalyptic number.

855252571 is a deficient number, since it is larger than the sum of its proper divisors (1).

855252571 is an equidigital number, since it uses as much as digits as its factorization.

855252571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 140000, while the sum is 40.

The square root of 855252571 is about 29244.7015884929. The cubic root of 855252571 is about 949.2154449611.

The spelling of 855252571 in words is "eight hundred fifty-five million, two hundred fifty-two thousand, five hundred seventy-one".