9771257 has 4 divisors (see below), whose sum is σ = 9804900. Its totient is φ = 9737616.

The previous prime is 9771247. The next prime is 9771259. The reversal of 9771257 is 7521779.

9771257 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7521779 = 107 ⋅70297.

It can be written as a sum of positive squares in 2 ways, for example, as 9388096 + 383161 = 3064^2 + 619^2 .

It is a cyclic number.

It is not a de Polignac number, because 9771257 - 2⁴ = 9771241 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 9771257.

It is not an unprimeable number, because it can be changed into a prime (9771259) 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, 16382 + ... + 16967.

It is an arithmetic number, because the mean of its divisors is an integer number (2451225).

Almost surely, 2^9771257 is an apocalyptic number.

It is an amenable number.

9771257 is a deficient number, since it is larger than the sum of its proper divisors (33643).

9771257 is a wasteful number, since it uses less digits than its factorization.

9771257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33642.

The product of its digits is 30870, while the sum is 38.

The square root of 9771257 is about 3125.9009901147. The cubic root of 9771257 is about 213.7880759319.

The spelling of 9771257 in words is "nine million, seven hundred seventy-one thousand, two hundred fifty-seven".