85857801 has 4 divisors (see below), whose sum is σ = 114477072. Its totient is φ = 57238532.

The previous prime is 85857791. The next prime is 85857833. The reversal of 85857801 is 10875858.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85857801 - 2¹⁹ = 85333513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85857841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14309631 + ... + 14309636.

It is an arithmetic number, because the mean of its divisors is an integer number (28619268).

Almost surely, 2^85857801 is an apocalyptic number.

It is an amenable number.

85857801 is a deficient number, since it is larger than the sum of its proper divisors (28619271).

85857801 is a wasteful number, since it uses less digits than its factorization.

85857801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28619270.

The product of its (nonzero) digits is 89600, while the sum is 42.

The square root of 85857801 is about 9265.9484673723. The cubic root of 85857801 is about 441.1570802155.

The spelling of 85857801 in words is "eighty-five million, eight hundred fifty-seven thousand, eight hundred one".