2104453261 has 2 divisors, whose sum is σ = 2104453262. Its totient is φ = 2104453260.

The previous prime is 2104453249. The next prime is 2104453283. The reversal of 2104453261 is 1623544012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1097596900 + 1006856361 = 33130^2 + 31731^2 .

It is a cyclic number.

It is not a de Polignac number, because 2104453261 - 2⁵ = 2104453229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2104453231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052226630 + 1052226631.

It is an arithmetic number, because the mean of its divisors is an integer number (1052226631).

Almost surely, 2^2104453261 is an apocalyptic number.

It is an amenable number.

2104453261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2104453261 is an equidigital number, since it uses as much as digits as its factorization.

2104453261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 2104453261 is about 45874.3202783431. The cubic root of 2104453261 is about 1281.4837248142.

Adding to 2104453261 its reverse (1623544012), we get a palindrome (3727997273).

It can be divided in two parts, 21044 and 53261, that added together give a triangular number (74305 = T₃₈₅).

The spelling of 2104453261 in words is "two billion, one hundred four million, four hundred fifty-three thousand, two hundred sixty-one".