85875511 has 4 divisors (see below), whose sum is σ = 85908952. Its totient is φ = 85842072.

The previous prime is 85875499. The next prime is 85875547. The reversal of 85875511 is 11557858.

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 85875511 - 2⁵ = 85875479 is a prime.

It is a super-2 number, since 2×85875511² = 14749206779022242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85875571) 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, 12516 + ... + 18121.

It is an arithmetic number, because the mean of its divisors is an integer number (21477238).

Almost surely, 2^85875511 is an apocalyptic number.

85875511 is a deficient number, since it is larger than the sum of its proper divisors (33441).

85875511 is a wasteful number, since it uses less digits than its factorization.

85875511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33440.

The product of its digits is 56000, while the sum is 40.

The square root of 85875511 is about 9266.9040677024. The cubic root of 85875511 is about 441.1874108112.

The spelling of 85875511 in words is "eighty-five million, eight hundred seventy-five thousand, five hundred eleven".