85299291 has 64 divisors (see below), whose sum is σ = 159667200. Its totient is φ = 43718400.

The previous prime is 85299287. The next prime is 85299307. The reversal of 85299291 is 19299258.

It is not a de Polignac number, because 85299291 - 2² = 85299287 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85299271) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 184801 + ... + 185261.

It is an arithmetic number, because the mean of its divisors is an integer number (2494800).

Almost surely, 2^85299291 is an apocalyptic number.

85299291 is a deficient number, since it is larger than the sum of its proper divisors (74367909).

85299291 is a wasteful number, since it uses less digits than its factorization.

85299291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577 (or 571 counting only the distinct ones).

The product of its digits is 116640, while the sum is 45.

The square root of 85299291 is about 9235.7615278871. The cubic root of 85299291 is about 440.1984143012.

The spelling of 85299291 in words is "eighty-five million, two hundred ninety-nine thousand, two hundred ninety-one".