9072257 has 4 divisors (see below), whose sum is σ = 9123120. Its totient is φ = 9021396.

The previous prime is 9072247. The next prime is 9072299. The reversal of 9072257 is 7522709.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7522709 = 1229 ⋅6121.

It is a cyclic number.

It is not a de Polignac number, because 9072257 - 2¹⁰ = 9071233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9072227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25163 + ... + 25520.

It is an arithmetic number, because the mean of its divisors is an integer number (2280780).

Almost surely, 2^9072257 is an apocalyptic number.

It is an amenable number.

9072257 is a deficient number, since it is larger than the sum of its proper divisors (50863).

9072257 is a wasteful number, since it uses less digits than its factorization.

9072257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50862.

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 9072257 is about 3012.0187582417. The cubic root of 9072257 is about 208.5635681165.

The spelling of 9072257 in words is "nine million, seventy-two thousand, two hundred fifty-seven".