85566245 has 4 divisors (see below), whose sum is σ = 102679500. Its totient is φ = 68452992.

The previous prime is 85566223. The next prime is 85566251. The reversal of 85566245 is 54266558.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54266558 = 2 ⋅27133279.

It can be written as a sum of positive squares in 2 ways, for example, as 11296321 + 74269924 = 3361^2 + 8618^2 .

It is a cyclic number.

It is not a de Polignac number, because 85566245 - 2¹⁴ = 85549861 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8556620 + ... + 8556629.

It is an arithmetic number, because the mean of its divisors is an integer number (25669875).

Almost surely, 2^85566245 is an apocalyptic number.

It is an amenable number.

85566245 is a deficient number, since it is larger than the sum of its proper divisors (17113255).

85566245 is a wasteful number, since it uses less digits than its factorization.

85566245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17113254.

The product of its digits is 288000, while the sum is 41.

The square root of 85566245 is about 9250.2024302174. The cubic root of 85566245 is about 440.6571533634.

The spelling of 85566245 in words is "eighty-five million, five hundred sixty-six thousand, two hundred forty-five".