85522511 has 2 divisors, whose sum is σ = 85522512. Its totient is φ = 85522510.

The previous prime is 85522501. The next prime is 85522513. The reversal of 85522511 is 11522558.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85522511 - 2¹⁰ = 85521487 is a prime.

It is a Sophie Germain prime.

Together with 85522513, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85522513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42761255 + 42761256.

It is an arithmetic number, because the mean of its divisors is an integer number (42761256).

Almost surely, 2^85522511 is an apocalyptic number.

85522511 is a deficient number, since it is larger than the sum of its proper divisors (1).

85522511 is an equidigital number, since it uses as much as digits as its factorization.

85522511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4000, while the sum is 29.

The square root of 85522511 is about 9247.8381798126. The cubic root of 85522511 is about 440.5820654040.

The spelling of 85522511 in words is "eighty-five million, five hundred twenty-two thousand, five hundred eleven".