85711151 has 2 divisors, whose sum is σ = 85711152. Its totient is φ = 85711150.

The previous prime is 85711121. The next prime is 85711163. The reversal of 85711151 is 15111758.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85711151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85711111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42855575 + 42855576.

It is an arithmetic number, because the mean of its divisors is an integer number (42855576).

Almost surely, 2^85711151 is an apocalyptic number.

85711151 is a deficient number, since it is larger than the sum of its proper divisors (1).

85711151 is an equidigital number, since it uses as much as digits as its factorization.

85711151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1400, while the sum is 29.

The square root of 85711151 is about 9258.0317022572. The cubic root of 85711151 is about 440.9057632911.

The spelling of 85711151 in words is "eighty-five million, seven hundred eleven thousand, one hundred fifty-one".