85090801 has 4 divisors (see below), whose sum is σ = 85522932. Its totient is φ = 84658672.

The previous prime is 85090751. The next prime is 85090807. The reversal of 85090801 is 10809058.

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

It can be written as a sum of positive squares in 2 ways, for example, as 47941776 + 37149025 = 6924^2 + 6095^2 .

It is a cyclic number.

It is not a de Polignac number, because 85090801 - 2¹³ = 85082609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85090807) 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, 215770 + ... + 216163.

It is an arithmetic number, because the mean of its divisors is an integer number (21380733).

Almost surely, 2^85090801 is an apocalyptic number.

It is an amenable number.

85090801 is a deficient number, since it is larger than the sum of its proper divisors (432131).

85090801 is a wasteful number, since it uses less digits than its factorization.

85090801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432130.

The product of its (nonzero) digits is 2880, while the sum is 31.

The square root of 85090801 is about 9224.4675185075. The cubic root of 85090801 is about 439.8394748449.

Adding to 85090801 its reverse (10809058), we get a palindrome (95899859).

The spelling of 85090801 in words is "eighty-five million, ninety thousand, eight hundred one".