9117261 has 6 divisors (see below), whose sum is σ = 13169390. Its totient is φ = 6078168.

The previous prime is 9117257. The next prime is 9117263. The reversal of 9117261 is 1627119.

9117261 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 9036036 + 81225 = 3006^2 + 285^2 .

It is not a de Polignac number, because 9117261 - 2² = 9117257 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 (9117263) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 506506 + ... + 506523.

Almost surely, 2^9117261 is an apocalyptic number.

It is an amenable number.

9117261 is a deficient number, since it is larger than the sum of its proper divisors (4052129).

9117261 is a wasteful number, since it uses less digits than its factorization.

9117261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013035 (or 1013032 counting only the distinct ones).

The product of its digits is 756, while the sum is 27.

The square root of 9117261 is about 3019.4802532886. The cubic root of 9117261 is about 208.9078674828.

It can be divided in two parts, 91 and 17261, that multiplied together give a palindrome (1570751).

The spelling of 9117261 in words is "nine million, one hundred seventeen thousand, two hundred sixty-one".