11291801 has 2 divisors, whose sum is σ = 11291802. Its totient is φ = 11291800.

The previous prime is 11291789. The next prime is 11291803. The reversal of 11291801 is 10819211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7590025 + 3701776 = 2755^2 + 1924^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11291801 is a prime.

Together with 11291803, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11291803) 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, 5645900 + 5645901.

It is an arithmetic number, because the mean of its divisors is an integer number (5645901).

Almost surely, 2^11291801 is an apocalyptic number.

It is an amenable number.

11291801 is a deficient number, since it is larger than the sum of its proper divisors (1).

11291801 is an equidigital number, since it uses as much as digits as its factorization.

11291801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 23.

The square root of 11291801 is about 3360.3275137998. The cubic root of 11291801 is about 224.3474160891.

The spelling of 11291801 in words is "eleven million, two hundred ninety-one thousand, eight hundred one".