11421853 has 4 divisors (see below), whose sum is σ = 11815740. Its totient is φ = 11027968.

The previous prime is 11421803. The next prime is 11421859. The reversal of 11421853 is 35812411.

11421853 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 an emirpimes, since its reverse is a distinct semiprime: 35812411 = 37 ⋅967903.

It can be written as a sum of positive squares in 2 ways, for example, as 2439844 + 8982009 = 1562^2 + 2997^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11421853 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 (11421859) 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, 196900 + ... + 196957.

It is an arithmetic number, because the mean of its divisors is an integer number (2953935).

Almost surely, 2^11421853 is an apocalyptic number.

It is an amenable number.

11421853 is a deficient number, since it is larger than the sum of its proper divisors (393887).

11421853 is an equidigital number, since it uses as much as digits as its factorization.

11421853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393886.

The product of its digits is 960, while the sum is 25.

The square root of 11421853 is about 3379.6232038498. The cubic root of 11421853 is about 225.2054288438.

The spelling of 11421853 in words is "eleven million, four hundred twenty-one thousand, eight hundred fifty-three".