85755739 has 2 divisors, whose sum is σ = 85755740. Its totient is φ = 85755738.

The previous prime is 85755737. The next prime is 85755773. The reversal of 85755739 is 93755758.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85755739 - 2¹ = 85755737 is a prime.

It is a super-2 number, since 2×85755739² = 14708093542872242, which contains 22 as substring.

Together with 85755737, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 85755692 and 85755701.

It is not a weakly prime, because it can be changed into another prime (85755731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42877869 + 42877870.

It is an arithmetic number, because the mean of its divisors is an integer number (42877870).

Almost surely, 2^85755739 is an apocalyptic number.

85755739 is a deficient number, since it is larger than the sum of its proper divisors (1).

85755739 is an equidigital number, since it uses as much as digits as its factorization.

85755739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1323000, while the sum is 49.

The square root of 85755739 is about 9260.4394604144. The cubic root of 85755739 is about 440.9822049130.

The spelling of 85755739 in words is "eighty-five million, seven hundred fifty-five thousand, seven hundred thirty-nine".