9172565 has 4 divisors (see below), whose sum is σ = 11007084. Its totient is φ = 7338048.

The previous prime is 9172547. The next prime is 9172577. The reversal of 9172565 is 5652719.

9172565 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1697809 + 7474756 = 1303^2 + 2734^2 .

It is a cyclic number.

It is not a de Polignac number, because 9172565 - 2²⁰ = 8123989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 917252 + ... + 917261.

It is an arithmetic number, because the mean of its divisors is an integer number (2751771).

Almost surely, 2^9172565 is an apocalyptic number.

It is an amenable number.

9172565 is a deficient number, since it is larger than the sum of its proper divisors (1834519).

9172565 is a wasteful number, since it uses less digits than its factorization.

9172565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1834518.

The product of its digits is 18900, while the sum is 35.

The square root of 9172565 is about 3028.6242751454. The cubic root of 9172565 is about 209.3294180122.

The spelling of 9172565 in words is "nine million, one hundred seventy-two thousand, five hundred sixty-five".