11279257 has 18 divisors (see below), whose sum is σ = 12942762. Its totient is φ = 9820800.

The previous prime is 11279243. The next prime is 11279263. The reversal of 11279257 is 75297211.

11279257 is digitally balanced in base 2, because in such base 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., 9418761 + 1860496 = 3069^2 + 1364^2 .

It is not a de Polignac number, because 11279257 - 2²³ = 2890649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11279657) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 116233 + ... + 116329.

Almost surely, 2^11279257 is an apocalyptic number.

It is an amenable number.

11279257 is a deficient number, since it is larger than the sum of its proper divisors (1663505).

11279257 is an equidigital number, since it uses as much as digits as its factorization.

11279257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181 (or 139 counting only the distinct ones).

The product of its digits is 8820, while the sum is 34.

The square root of 11279257 is about 3358.4605104125. The cubic root of 11279257 is about 224.2643098680.

The spelling of 11279257 in words is "eleven million, two hundred seventy-nine thousand, two hundred fifty-seven".