11821253 has 4 divisors (see below), whose sum is σ = 11931840. Its totient is φ = 11710668.

The previous prime is 11821237. The next prime is 11821267. The reversal of 11821253 is 35212811.

It is a happy number.

11821253 is digitally balanced in base 3, 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 11821253 - 2⁴ = 11821237 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 (11821223) 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, 55133 + ... + 55346.

It is an arithmetic number, because the mean of its divisors is an integer number (2982960).

Almost surely, 2^11821253 is an apocalyptic number.

It is an amenable number.

11821253 is a deficient number, since it is larger than the sum of its proper divisors (110587).

11821253 is a wasteful number, since it uses less digits than its factorization.

11821253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110586.

The product of its digits is 480, while the sum is 23.

The square root of 11821253 is about 3438.2049095422. The cubic root of 11821253 is about 227.8004114112.

The spelling of 11821253 in words is "eleven million, eight hundred twenty-one thousand, two hundred fifty-three".