85851373 has 2 divisors, whose sum is σ = 85851374. Its totient is φ = 85851372.

The previous prime is 85851347. The next prime is 85851383. The reversal of 85851373 is 37315858.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49815364 + 36036009 = 7058^2 + 6003^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85851373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85851323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42925686 + 42925687.

It is an arithmetic number, because the mean of its divisors is an integer number (42925687).

Almost surely, 2^85851373 is an apocalyptic number.

It is an amenable number.

85851373 is a deficient number, since it is larger than the sum of its proper divisors (1).

85851373 is an equidigital number, since it uses as much as digits as its factorization.

85851373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100800, while the sum is 40.

The square root of 85851373 is about 9265.6015994645. The cubic root of 85851373 is about 441.1460704278.

The spelling of 85851373 in words is "eighty-five million, eight hundred fifty-one thousand, three hundred seventy-three".