2544720533 has 2 divisors, whose sum is σ = 2544720534. Its totient is φ = 2544720532.

The previous prime is 2544720523. The next prime is 2544720539. The reversal of 2544720533 is 3350274452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1929581329 + 615139204 = 43927^2 + 24802^2 .

It is a cyclic number.

It is not a de Polignac number, because 2544720533 - 2¹⁰ = 2544719509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2544720493 and 2544720502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2544720539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1272360266 + 1272360267.

It is an arithmetic number, because the mean of its divisors is an integer number (1272360267).

Almost surely, 2^2544720533 is an apocalyptic number.

It is an amenable number.

2544720533 is a deficient number, since it is larger than the sum of its proper divisors (1).

2544720533 is an equidigital number, since it uses as much as digits as its factorization.

2544720533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100800, while the sum is 35.

The square root of 2544720533 is about 50445.2230939660. The cubic root of 2544720533 is about 1365.2537078449.

Adding to 2544720533 its reverse (3350274452), we get a palindrome (5894994985).

The spelling of 2544720533 in words is "two billion, five hundred forty-four million, seven hundred twenty thousand, five hundred thirty-three".