85356143 has 2 divisors, whose sum is σ = 85356144. Its totient is φ = 85356142.

The previous prime is 85356109. The next prime is 85356157. The reversal of 85356143 is 34165358.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85356143 - 2⁸ = 85355887 is a prime.

It is a super-2 number, since 2×85356143² = 14571342295672898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85353143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42678071 + 42678072.

It is an arithmetic number, because the mean of its divisors is an integer number (42678072).

Almost surely, 2^85356143 is an apocalyptic number.

85356143 is a deficient number, since it is larger than the sum of its proper divisors (1).

85356143 is an equidigital number, since it uses as much as digits as its factorization.

85356143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 35.

The square root of 85356143 is about 9238.8388339661. The cubic root of 85356143 is about 440.2961900350.

The spelling of 85356143 in words is "eighty-five million, three hundred fifty-six thousand, one hundred forty-three".