11957641 has 2 divisors, whose sum is σ = 11957642. Its totient is φ = 11957640.

The previous prime is 11957633. The next prime is 11957651. The reversal of 11957641 is 14675911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8732025 + 3225616 = 2955^2 + 1796^2 .

It is an emirp because it is prime and its reverse (14675911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11957641 - 2³ = 11957633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11957597 and 11957606.

It is not a weakly prime, because it can be changed into another prime (11957611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5978820 + 5978821.

It is an arithmetic number, because the mean of its divisors is an integer number (5978821).

Almost surely, 2^11957641 is an apocalyptic number.

It is an amenable number.

11957641 is a deficient number, since it is larger than the sum of its proper divisors (1).

11957641 is an equidigital number, since it uses as much as digits as its factorization.

11957641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 34.

The square root of 11957641 is about 3457.9822151075. The cubic root of 11957641 is about 228.6731478621.

It can be divided in two parts, 1195 and 7641, that added together give a square (8836 = 94²).

The spelling of 11957641 in words is "eleven million, nine hundred fifty-seven thousand, six hundred forty-one".