2543566441 has 12 divisors (see below), whose sum is σ = 2758167948. Its totient is φ = 2344590144.

The previous prime is 2543566429. The next prime is 2543566451. The reversal of 2543566441 is 1446653452.

It can be written as a sum of positive squares in 6 ways, for example, as 1390041 + 2542176400 = 1179^2 + 50420^2 .

It is not a de Polignac number, because 2543566441 - 2⁷ = 2543566313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2543566394 and 2543566403.

It is not an unprimeable number, because it can be changed into a prime (2543566451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113611 + ... + 134143.

It is an arithmetic number, because the mean of its divisors is an integer number (229847329).

Almost surely, 2^2543566441 is an apocalyptic number.

It is an amenable number.

2543566441 is a deficient number, since it is larger than the sum of its proper divisors (214601507).

2543566441 is a wasteful number, since it uses less digits than its factorization.

2543566441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21292 (or 21279 counting only the distinct ones).

The product of its digits is 345600, while the sum is 40.

The square root of 2543566441 is about 50433.7827353848. The cubic root of 2543566441 is about 1365.0472848321.

The spelling of 2543566441 in words is "two billion, five hundred forty-three million, five hundred sixty-six thousand, four hundred forty-one".