85012771 has 2 divisors, whose sum is σ = 85012772. Its totient is φ = 85012770.

The previous prime is 85012727. The next prime is 85012777. The reversal of 85012771 is 17721058.

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-85012771 is a prime.

It is not a weakly prime, because it can be changed into another prime (85012777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42506385 + 42506386.

It is an arithmetic number, because the mean of its divisors is an integer number (42506386).

Almost surely, 2^85012771 is an apocalyptic number.

85012771 is a deficient number, since it is larger than the sum of its proper divisors (1).

85012771 is an equidigital number, since it uses as much as digits as its factorization.

85012771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3920, while the sum is 31.

The square root of 85012771 is about 9220.2370359986. The cubic root of 85012771 is about 439.7049864706.

The spelling of 85012771 in words is "eighty-five million, twelve thousand, seven hundred seventy-one".