85505506 has 8 divisors (see below), whose sum is σ = 128332764. Its totient is φ = 42727920.

The previous prime is 85505501. The next prime is 85505507. The reversal of 85505506 is 60550558.

It can be written as a sum of positive squares in 2 ways, for example, as 75951225 + 9554281 = 8715^2 + 3091^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×85505506² = 14622383112632072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85505501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7765 + ... + 15208.

Almost surely, 2^85505506 is an apocalyptic number.

85505506 is a deficient number, since it is larger than the sum of its proper divisors (42827258).

85505506 is a wasteful number, since it uses less digits than its factorization.

85505506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24836.

The product of its (nonzero) digits is 30000, while the sum is 34.

The square root of 85505506 is about 9246.9187300419. The cubic root of 85505506 is about 440.5528621975.

The spelling of 85505506 in words is "eighty-five million, five hundred five thousand, five hundred six".