11521743 has 8 divisors (see below), whose sum is σ = 15381888. Its totient is φ = 7671384.

The previous prime is 11521717. The next prime is 11521747. The reversal of 11521743 is 34712511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11521743 - 2⁵ = 11521711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11521747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 996 + ... + 4902.

It is an arithmetic number, because the mean of its divisors is an integer number (1922736).

Almost surely, 2^11521743 is an apocalyptic number.

11521743 is a deficient number, since it is larger than the sum of its proper divisors (3860145).

11521743 is an equidigital number, since it uses as much as digits as its factorization.

11521743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4893.

The product of its digits is 840, while the sum is 24.

The square root of 11521743 is about 3394.3693081337. The cubic root of 11521743 is about 225.8600368140.

The spelling of 11521743 in words is "eleven million, five hundred twenty-one thousand, seven hundred forty-three".