85051147 has 2 divisors, whose sum is σ = 85051148. Its totient is φ = 85051146.

The previous prime is 85051133. The next prime is 85051157. The reversal of 85051147 is 74115058.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85051147 - 2¹¹ = 85049099 is a prime.

It is not a weakly prime, because it can be changed into another prime (85051157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42525573 + 42525574.

It is an arithmetic number, because the mean of its divisors is an integer number (42525574).

Almost surely, 2^85051147 is an apocalyptic number.

85051147 is a deficient number, since it is larger than the sum of its proper divisors (1).

85051147 is an equidigital number, since it uses as much as digits as its factorization.

85051147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5600, while the sum is 31.

The square root of 85051147 is about 9222.3178756753. The cubic root of 85051147 is about 439.7711395906.

The spelling of 85051147 in words is "eighty-five million, fifty-one thousand, one hundred forty-seven".