11257761 has 4 divisors (see below), whose sum is σ = 15010352. Its totient is φ = 7505172.

The previous prime is 11257759. The next prime is 11257781. The reversal of 11257761 is 16775211.

11257761 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11257761 - 2¹ = 11257759 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11257711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1876291 + ... + 1876296.

It is an arithmetic number, because the mean of its divisors is an integer number (3752588).

Almost surely, 2^11257761 is an apocalyptic number.

It is an amenable number.

11257761 is a deficient number, since it is larger than the sum of its proper divisors (3752591).

11257761 is an equidigital number, since it uses as much as digits as its factorization.

11257761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3752590.

The product of its digits is 2940, while the sum is 30.

The square root of 11257761 is about 3355.2587083562. The cubic root of 11257761 is about 224.1217516796.

The spelling of 11257761 in words is "eleven million, two hundred fifty-seven thousand, seven hundred sixty-one".