11257279 has 4 divisors (see below), whose sum is σ = 12280680. Its totient is φ = 10233880.

The previous prime is 11257243. The next prime is 11257313. The reversal of 11257279 is 97275211.

11257279 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11257279 - 2⁷ = 11257151 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 (11257229) 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, 511684 + ... + 511705.

It is an arithmetic number, because the mean of its divisors is an integer number (3070170).

Almost surely, 2^11257279 is an apocalyptic number.

11257279 is a deficient number, since it is larger than the sum of its proper divisors (1023401).

11257279 is a wasteful number, since it uses less digits than its factorization.

11257279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023400.

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

The square root of 11257279 is about 3355.1868800411. The cubic root of 11257279 is about 224.1185530499.

The spelling of 11257279 in words is "eleven million, two hundred fifty-seven thousand, two hundred seventy-nine".