85006501 has 4 divisors (see below), whose sum is σ = 87304012. Its totient is φ = 82708992.

The previous prime is 85006499. The next prime is 85006517. The reversal of 85006501 is 10560058.

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 79121025 + 5885476 = 8895^2 + 2426^2 .

It is a cyclic number.

It is not a de Polignac number, because 85006501 - 2¹ = 85006499 is a prime.

It is a super-2 number, since 2×85006501² = 14452210424526002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85046501) 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, 1148700 + ... + 1148773.

It is an arithmetic number, because the mean of its divisors is an integer number (21826003).

Almost surely, 2^85006501 is an apocalyptic number.

It is an amenable number.

85006501 is a deficient number, since it is larger than the sum of its proper divisors (2297511).

85006501 is a wasteful number, since it uses less digits than its factorization.

85006501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2297510.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 85006501 is about 9219.8970167784. The cubic root of 85006501 is about 439.6941762594.

Adding to 85006501 its reverse (10560058), we get a palindrome (95566559).

The spelling of 85006501 in words is "eighty-five million, six thousand, five hundred one".