11957801 has 2 divisors, whose sum is σ = 11957802. Its totient is φ = 11957800.

The previous prime is 11957797. The next prime is 11957809. The reversal of 11957801 is 10875911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11909401 + 48400 = 3451^2 + 220^2 .

It is a cyclic number.

It is not a de Polignac number, because 11957801 - 2² = 11957797 is a prime.

It is not a weakly prime, because it can be changed into another prime (11957809) 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, 5978900 + 5978901.

It is an arithmetic number, because the mean of its divisors is an integer number (5978901).

Almost surely, 2^11957801 is an apocalyptic number.

It is an amenable number.

11957801 is a deficient number, since it is larger than the sum of its proper divisors (1).

11957801 is an equidigital number, since it uses as much as digits as its factorization.

11957801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 32.

The square root of 11957801 is about 3458.0053499091. The cubic root of 11957801 is about 228.6741677829.

The spelling of 11957801 in words is "eleven million, nine hundred fifty-seven thousand, eight hundred one".