85111043 has 4 divisors (see below), whose sum is σ = 86506368. Its totient is φ = 83715720.

The previous prime is 85111009. The next prime is 85111067. The reversal of 85111043 is 34011158.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85111043 - 2¹⁰ = 85110019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85111003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 697571 + ... + 697692.

It is an arithmetic number, because the mean of its divisors is an integer number (21626592).

Almost surely, 2^85111043 is an apocalyptic number.

85111043 is a deficient number, since it is larger than the sum of its proper divisors (1395325).

85111043 is a wasteful number, since it uses less digits than its factorization.

85111043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1395324.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 85111043 is about 9225.5646439662. The cubic root of 85111043 is about 439.8743494520.

The spelling of 85111043 in words is "eighty-five million, one hundred eleven thousand, forty-three".