11875921 has 2 divisors, whose sum is σ = 11875922. Its totient is φ = 11875920.

The previous prime is 11875901. The next prime is 11875939. The reversal of 11875921 is 12957811.

It is a happy number.

11875921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10471696 + 1404225 = 3236^2 + 1185^2 .

It is a cyclic number.

It is not a de Polignac number, because 11875921 - 2⁷ = 11875793 is a prime.

It is not a weakly prime, because it can be changed into another prime (11875901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5937960 + 5937961.

It is an arithmetic number, because the mean of its divisors is an integer number (5937961).

Almost surely, 2^11875921 is an apocalyptic number.

It is an amenable number.

11875921 is a deficient number, since it is larger than the sum of its proper divisors (1).

11875921 is an equidigital number, since it uses as much as digits as its factorization.

11875921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 34.

The square root of 11875921 is about 3446.1458181569. The cubic root of 11875921 is about 228.1510297689.

The spelling of 11875921 in words is "eleven million, eight hundred seventy-five thousand, nine hundred twenty-one".