11489557 has 4 divisors (see below), whose sum is σ = 11756800. Its totient is φ = 11222316.

The previous prime is 11489537. The next prime is 11489567. The reversal of 11489557 is 75598411.

It is a happy number.

11489557 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 11489557 - 2²³ = 3100949 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 (11489507) 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, 133557 + ... + 133642.

It is an arithmetic number, because the mean of its divisors is an integer number (2939200).

Almost surely, 2^11489557 is an apocalyptic number.

It is an amenable number.

11489557 is a deficient number, since it is larger than the sum of its proper divisors (267243).

11489557 is an equidigital number, since it uses as much as digits as its factorization.

11489557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267242.

The product of its digits is 50400, while the sum is 40.

The square root of 11489557 is about 3389.6249055021. The cubic root of 11489557 is about 225.6495272635.

The spelling of 11489557 in words is "eleven million, four hundred eighty-nine thousand, five hundred fifty-seven".