85150509 has 4 divisors (see below), whose sum is σ = 113534016. Its totient is φ = 56767004.

The previous prime is 85150469. The next prime is 85150523. The reversal of 85150509 is 90505158.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85150509 - 2⁸ = 85150253 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85150509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85150529) 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, 14191749 + ... + 14191754.

It is an arithmetic number, because the mean of its divisors is an integer number (28383504).

Almost surely, 2^85150509 is an apocalyptic number.

It is an amenable number.

85150509 is a deficient number, since it is larger than the sum of its proper divisors (28383507).

85150509 is a wasteful number, since it uses less digits than its factorization.

85150509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28383506.

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

The square root of 85150509 is about 9227.7033437362. The cubic root of 85150509 is about 439.9423288738.

It can be divided in two parts, 851 and 50509, that added together give a triangular number (51360 = T₃₂₀).

The spelling of 85150509 in words is "eighty-five million, one hundred fifty thousand, five hundred nine".