11711257 has 4 divisors (see below), whose sum is σ = 11820816. Its totient is φ = 11601700.

The previous prime is 11711221. The next prime is 11711261. The reversal of 11711257 is 75211711.

11711257 is digitally balanced in base 2, 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 a cyclic number.

It is not a de Polignac number, because 11711257 - 2¹⁵ = 11678489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11711057) 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, 54619 + ... + 54832.

It is an arithmetic number, because the mean of its divisors is an integer number (2955204).

Almost surely, 2^11711257 is an apocalyptic number.

It is an amenable number.

11711257 is a deficient number, since it is larger than the sum of its proper divisors (109559).

11711257 is a wasteful number, since it uses less digits than its factorization.

11711257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109558.

The product of its digits is 490, while the sum is 25.

The square root of 11711257 is about 3422.1713867076. The cubic root of 11711257 is about 227.0916524592.

Adding to 11711257 its reverse (75211711), we get a palindrome (86922968).

The spelling of 11711257 in words is "eleven million, seven hundred eleven thousand, two hundred fifty-seven".