2104961 has 2 divisors, whose sum is σ = 2104962. Its totient is φ = 2104960.

The previous prime is 2104951. The next prime is 2104969. The reversal of 2104961 is 1694012.

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., 1809025 + 295936 = 1345^2 + 544^2 .

It is a cyclic number.

It is not a de Polignac number, because 2104961 - 2¹⁴ = 2088577 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (2104969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052480 + 1052481.

It is an arithmetic number, because the mean of its divisors is an integer number (1052481).

2^2104961 is an apocalyptic number.

It is an amenable number.

2104961 is a deficient number, since it is larger than the sum of its proper divisors (1).

2104961 is an equidigital number, since it uses as much as digits as its factorization.

2104961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 2104961 is about 1450.8483725049. The cubic root of 2104961 is about 128.1586777225.

Adding to 2104961 its reverse (1694012), we get a palindrome (3798973).

The spelling of 2104961 in words is "two million, one hundred four thousand, nine hundred sixty-one".