2261801 has 2 divisors, whose sum is σ = 2261802. Its totient is φ = 2261800.

The previous prime is 2261789. The next prime is 2261803. The reversal of 2261801 is 1081622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1537600 + 724201 = 1240^2 + 851^2 .

It is a cyclic number.

It is not a de Polignac number, because 2261801 - 2⁶ = 2261737 is a prime.

Together with 2261803, 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 (2261803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1130900 + 1130901.

It is an arithmetic number, because the mean of its divisors is an integer number (1130901).

2^2261801 is an apocalyptic number.

It is an amenable number.

2261801 is a deficient number, since it is larger than the sum of its proper divisors (1).

2261801 is an equidigital number, since it uses as much as digits as its factorization.

2261801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 2261801 is about 1503.9285222377. The cubic root of 2261801 is about 131.2657619770.

The spelling of 2261801 in words is "two million, two hundred sixty-one thousand, eight hundred one".