2206081 has 2 divisors, whose sum is σ = 2206082. Its totient is φ = 2206080.

The previous prime is 2206031. The next prime is 2206093. The reversal of 2206081 is 1806022.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2076481 + 129600 = 1441^2 + 360^2 .

It is a cyclic number.

It is not a de Polignac number, because 2206081 - 2²¹ = 108929 is a prime.

It is a super-2 number, since 2×2206081² = 9733586757122, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2206021) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1103040 + 1103041.

It is an arithmetic number, because the mean of its divisors is an integer number (1103041).

2^2206081 is an apocalyptic number.

It is an amenable number.

2206081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2206081 is an equidigital number, since it uses as much as digits as its factorization.

2206081 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 19.

The square root of 2206081 is about 1485.2881875246. The cubic root of 2206081 is about 130.1788662122.

The spelling of 2206081 in words is "two million, two hundred six thousand, eighty-one".