9011257 has 4 divisors (see below), whose sum is σ = 9322020. Its totient is φ = 8700496.

The previous prime is 9011251. The next prime is 9011269. The reversal of 9011257 is 7521109.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7521109 = 109 ⋅69001.

It can be written as a sum of positive squares in 2 ways, for example, as 7513081 + 1498176 = 2741^2 + 1224^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9011257 is a prime.

It is a Duffinian number.

9011257 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9011251) 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, 155338 + ... + 155395.

It is an arithmetic number, because the mean of its divisors is an integer number (2330505).

Almost surely, 2^9011257 is an apocalyptic number.

It is an amenable number.

9011257 is a deficient number, since it is larger than the sum of its proper divisors (310763).

9011257 is a wasteful number, since it uses less digits than its factorization.

9011257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310762.

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 9011257 is about 3001.8755803664. The cubic root of 9011257 is about 208.0950702602.

The spelling of 9011257 in words is "nine million, eleven thousand, two hundred fifty-seven".