9009257 has 4 divisors (see below), whose sum is σ = 9075156. Its totient is φ = 8943360.

The previous prime is 9009229. The next prime is 9009277. The reversal of 9009257 is 7529009.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7529009 = 29 ⋅259621.

It can be written as a sum of positive squares in 2 ways, for example, as 7595536 + 1413721 = 2756^2 + 1189^2 .

It is not a de Polignac number, because 9009257 - 2²⁰ = 7960681 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9009277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32744 + ... + 33017.

It is an arithmetic number, because the mean of its divisors is an integer number (2268789).

Almost surely, 2^9009257 is an apocalyptic number.

It is an amenable number.

9009257 is a deficient number, since it is larger than the sum of its proper divisors (65899).

9009257 is a wasteful number, since it uses less digits than its factorization.

9009257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65898.

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 9009257 is about 3001.5424368148. The cubic root of 9009257 is about 208.0796739274.

The spelling of 9009257 in words is "nine million, nine thousand, two hundred fifty-seven".