85158811 has 8 divisors (see below), whose sum is σ = 89397504. Its totient is φ = 80964840.

The previous prime is 85158781. The next prime is 85158833. The reversal of 85158811 is 11885158.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85158811 - 2¹⁵ = 85126043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85158881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7245 + ... + 14926.

It is an arithmetic number, because the mean of its divisors is an integer number (11174688).

Almost surely, 2^85158811 is an apocalyptic number.

85158811 is a deficient number, since it is larger than the sum of its proper divisors (4238693).

85158811 is a wasteful number, since it uses less digits than its factorization.

85158811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22361.

The product of its digits is 12800, while the sum is 37.

The square root of 85158811 is about 9228.1531738480. The cubic root of 85158811 is about 439.9566262341.

The spelling of 85158811 in words is "eighty-five million, one hundred fifty-eight thousand, eight hundred eleven".