9573121 has 4 divisors (see below), whose sum is σ = 9831892. Its totient is φ = 9314352.

The previous prime is 9573097. The next prime is 9573127. The reversal of 9573121 is 1213759.

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 4260096 + 5313025 = 2064^2 + 2305^2 .

It is a cyclic number.

It is not a de Polignac number, because 9573121 - 2¹⁵ = 9540353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9573121.

It is not an unprimeable number, because it can be changed into a prime (9573127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129330 + ... + 129403.

It is an arithmetic number, because the mean of its divisors is an integer number (2457973).

Almost surely, 2^9573121 is an apocalyptic number.

It is an amenable number.

9573121 is a deficient number, since it is larger than the sum of its proper divisors (258771).

9573121 is a wasteful number, since it uses less digits than its factorization.

9573121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258770.

The product of its digits is 1890, while the sum is 28.

The square root of 9573121 is about 3094.0460565415. The cubic root of 9573121 is about 212.3331728697. Note that the first 3 decimals are identical.

The spelling of 9573121 in words is "nine million, five hundred seventy-three thousand, one hundred twenty-one".