85361291 has 2 divisors, whose sum is σ = 85361292. Its totient is φ = 85361290.

The previous prime is 85361219. The next prime is 85361293. The reversal of 85361291 is 19216358.

Together with previous prime (85361219) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85361291 - 2¹⁴ = 85344907 is a prime.

Together with 85361293, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85361293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42680645 + 42680646.

It is an arithmetic number, because the mean of its divisors is an integer number (42680646).

Almost surely, 2^85361291 is an apocalyptic number.

85361291 is a deficient number, since it is larger than the sum of its proper divisors (1).

85361291 is an equidigital number, since it uses as much as digits as its factorization.

85361291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 35.

The square root of 85361291 is about 9239.1174362057. The cubic root of 85361291 is about 440.3050415722.

The spelling of 85361291 in words is "eighty-five million, three hundred sixty-one thousand, two hundred ninety-one".