85077143 has 2 divisors, whose sum is σ = 85077144. Its totient is φ = 85077142.

The previous prime is 85077133. The next prime is 85077151. The reversal of 85077143 is 34177058.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85077143 - 2¹⁰ = 85076119 is a prime.

It is a super-2 number, since 2×85077143² = 14476240522084898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85077133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42538571 + 42538572.

It is an arithmetic number, because the mean of its divisors is an integer number (42538572).

Almost surely, 2^85077143 is an apocalyptic number.

85077143 is a deficient number, since it is larger than the sum of its proper divisors (1).

85077143 is an equidigital number, since it uses as much as digits as its factorization.

85077143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 85077143 is about 9223.7271750632. The cubic root of 85077143 is about 439.8159405776.

The spelling of 85077143 in words is "eighty-five million, seventy-seven thousand, one hundred forty-three".