85134911 has 2 divisors, whose sum is σ = 85134912. Its totient is φ = 85134910.

The previous prime is 85134899. The next prime is 85134919. The reversal of 85134911 is 11943158.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85134911 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85134919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42567455 + 42567456.

It is an arithmetic number, because the mean of its divisors is an integer number (42567456).

Almost surely, 2^85134911 is an apocalyptic number.

85134911 is a deficient number, since it is larger than the sum of its proper divisors (1).

85134911 is an equidigital number, since it uses as much as digits as its factorization.

85134911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 32.

The square root of 85134911 is about 9226.8581326473. The cubic root of 85134911 is about 439.9154641313.

The spelling of 85134911 in words is "eighty-five million, one hundred thirty-four thousand, nine hundred eleven".