11744521 has 2 divisors, whose sum is σ = 11744522. Its totient is φ = 11744520.

The previous prime is 11744519. The next prime is 11744531. The reversal of 11744521 is 12544711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9610000 + 2134521 = 3100^2 + 1461^2 .

It is a cyclic number.

It is not a de Polignac number, because 11744521 - 2¹ = 11744519 is a prime.

Together with 11744519, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11744531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5872260 + 5872261.

It is an arithmetic number, because the mean of its divisors is an integer number (5872261).

Almost surely, 2^11744521 is an apocalyptic number.

It is an amenable number.

11744521 is a deficient number, since it is larger than the sum of its proper divisors (1).

11744521 is an equidigital number, since it uses as much as digits as its factorization.

11744521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1120, while the sum is 25.

The square root of 11744521 is about 3427.0280127247. The cubic root of 11744521 is about 227.3064553629.

The spelling of 11744521 in words is "eleven million, seven hundred forty-four thousand, five hundred twenty-one".