11530257 has 4 divisors (see below), whose sum is σ = 15373680. Its totient is φ = 7686836.

The previous prime is 11530249. The next prime is 11530271. The reversal of 11530257 is 75203511.

11530257 is digitally balanced in base 2 and base 3, because in such bases 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 11530257 - 2³ = 11530249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11530297) 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, 1921707 + ... + 1921712.

It is an arithmetic number, because the mean of its divisors is an integer number (3843420).

Almost surely, 2^11530257 is an apocalyptic number.

It is an amenable number.

11530257 is a deficient number, since it is larger than the sum of its proper divisors (3843423).

11530257 is an equidigital number, since it uses as much as digits as its factorization.

11530257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3843422.

The product of its (nonzero) digits is 1050, while the sum is 24.

The square root of 11530257 is about 3395.6232123132. The cubic root of 11530257 is about 225.9156562599.

Adding to 11530257 its reverse (75203511), we get a palindrome (86733768).

The spelling of 11530257 in words is "eleven million, five hundred thirty thousand, two hundred fifty-seven".