85705201 has 4 divisors (see below), whose sum is σ = 86251252. Its totient is φ = 85159152.

The previous prime is 85705171. The next prime is 85705231. The reversal of 85705201 is 10250758.

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

It is an interprime number because it is at equal distance from previous prime (85705171) and next prime (85705231).

It can be written as a sum of positive squares in 2 ways, for example, as 27029601 + 58675600 = 5199^2 + 7660^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85705201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85705201.

It is not an unprimeable number, because it can be changed into a prime (85705231) 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, 272790 + ... + 273103.

It is an arithmetic number, because the mean of its divisors is an integer number (21562813).

Almost surely, 2^85705201 is an apocalyptic number.

It is an amenable number.

85705201 is a deficient number, since it is larger than the sum of its proper divisors (546051).

85705201 is a wasteful number, since it uses less digits than its factorization.

85705201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546050.

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 85705201 is about 9257.7103540778. The cubic root of 85705201 is about 440.8955606124.

Adding to 85705201 its reverse (10250758), we get a palindrome (95955959).

The spelling of 85705201 in words is "eighty-five million, seven hundred five thousand, two hundred one".