85555569 has 8 divisors (see below), whose sum is σ = 124444512. Its totient is φ = 51851840.

The previous prime is 85555553. The next prime is 85555571. The reversal of 85555569 is 96555558.

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

It is a cyclic number.

It is not a de Polignac number, because 85555569 - 2⁴ = 85555553 is a prime.

It is a super-2 number, since 2×85555569² = 14639510773827522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85555529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1296264 + ... + 1296329.

It is an arithmetic number, because the mean of its divisors is an integer number (15555564).

Almost surely, 2^85555569 is an apocalyptic number.

It is an amenable number.

85555569 is a deficient number, since it is larger than the sum of its proper divisors (38888943).

85555569 is a wasteful number, since it uses less digits than its factorization.

85555569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2592607.

The product of its digits is 1350000, while the sum is 48.

The square root of 85555569 is about 9249.6253437639. The cubic root of 85555569 is about 440.6388258425.

The spelling of 85555569 in words is "eighty-five million, five hundred fifty-five thousand, five hundred sixty-nine".