11721453 has 8 divisors (see below), whose sum is σ = 15741600. Its totient is φ = 7757808.

The previous prime is 11721443. The next prime is 11721473. The reversal of 11721453 is 35412711.

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

It is not a de Polignac number, because 11721453 - 2²⁰ = 10672877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11721443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13638 + ... + 14471.

It is an arithmetic number, because the mean of its divisors is an integer number (1967700).

Almost surely, 2^11721453 is an apocalyptic number.

It is an amenable number.

11721453 is a deficient number, since it is larger than the sum of its proper divisors (4020147).

11721453 is a wasteful number, since it uses less digits than its factorization.

11721453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28251.

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

The square root of 11721453 is about 3423.6607600637. The cubic root of 11721453 is about 227.1575365018.

The spelling of 11721453 in words is "eleven million, seven hundred twenty-one thousand, four hundred fifty-three".