85550109 has 8 divisors (see below), whose sum is σ = 116219232. Its totient is φ = 55957200.

The previous prime is 85550081. The next prime is 85550117. The reversal of 85550109 is 90105558.

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

It is not a de Polignac number, because 85550109 - 2¹⁹ = 85025821 is a prime.

It is a super-2 number, since 2×85550109² = 14637642299823762, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 85550109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85550119) 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, 268867 + ... + 269184.

It is an arithmetic number, because the mean of its divisors is an integer number (14527404).

Almost surely, 2^85550109 is an apocalyptic number.

It is an amenable number.

85550109 is a deficient number, since it is larger than the sum of its proper divisors (30669123).

85550109 is a wasteful number, since it uses less digits than its factorization.

85550109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538107.

The product of its (nonzero) digits is 9000, while the sum is 33.

The square root of 85550109 is about 9249.3301919653. The cubic root of 85550109 is about 440.6294520550.

The spelling of 85550109 in words is "eighty-five million, five hundred fifty thousand, one hundred nine".