85297141 has 2 divisors, whose sum is σ = 85297142. Its totient is φ = 85297140.

The previous prime is 85297139. The next prime is 85297181. The reversal of 85297141 is 14179258.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68724100 + 16573041 = 8290^2 + 4071^2 .

It is a cyclic number.

It is not a de Polignac number, because 85297141 - 2¹ = 85297139 is a prime.

Together with 85297139, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 85297141.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85297181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42648570 + 42648571.

It is an arithmetic number, because the mean of its divisors is an integer number (42648571).

Almost surely, 2^85297141 is an apocalyptic number.

It is an amenable number.

85297141 is a deficient number, since it is larger than the sum of its proper divisors (1).

85297141 is an equidigital number, since it uses as much as digits as its factorization.

85297141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 37.

The square root of 85297141 is about 9235.6451317707. The cubic root of 85297141 is about 440.1947158158.

The spelling of 85297141 in words is "eighty-five million, two hundred ninety-seven thousand, one hundred forty-one".