85810801 has 4 divisors (see below), whose sum is σ = 85904100. Its totient is φ = 85717504.

The previous prime is 85810789. The next prime is 85810811. The reversal of 85810801 is 10801858.

It is a happy number.

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 21169201 + 64641600 = 4601^2 + 8040^2 .

It is a cyclic number.

It is not a de Polignac number, because 85810801 - 2¹³ = 85802609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85810811) 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, 45256 + ... + 47113.

It is an arithmetic number, because the mean of its divisors is an integer number (21476025).

Almost surely, 2^85810801 is an apocalyptic number.

It is an amenable number.

85810801 is a deficient number, since it is larger than the sum of its proper divisors (93299).

85810801 is an equidigital number, since it uses as much as digits as its factorization.

85810801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93298.

The product of its (nonzero) digits is 2560, while the sum is 31.

The square root of 85810801 is about 9263.4119524072. The cubic root of 85810801 is about 441.0765665944.

The spelling of 85810801 in words is "eighty-five million, eight hundred ten thousand, eight hundred one".