85505299 has 4 divisors (see below), whose sum is σ = 93278520. Its totient is φ = 77732080.

The previous prime is 85505297. The next prime is 85505317. The reversal of 85505299 is 99250558.

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

It is a cyclic number.

It is not a de Polignac number, because 85505299 - 2¹ = 85505297 is a prime.

It is a super-2 number, since 2×85505299² = 14622312314158802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85505293) 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, 3886594 + ... + 3886615.

It is an arithmetic number, because the mean of its divisors is an integer number (23319630).

Almost surely, 2^85505299 is an apocalyptic number.

85505299 is a deficient number, since it is larger than the sum of its proper divisors (7773221).

85505299 is a wasteful number, since it uses less digits than its factorization.

85505299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7773220.

The product of its (nonzero) digits is 162000, while the sum is 43.

The square root of 85505299 is about 9246.9075371175. The cubic root of 85505299 is about 440.5525066862.

The spelling of 85505299 in words is "eighty-five million, five hundred five thousand, two hundred ninety-nine".