2540533 has 2 divisors, whose sum is σ = 2540534. Its totient is φ = 2540532.

The previous prime is 2540519. The next prime is 2540537. The reversal of 2540533 is 3350452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1697809 + 842724 = 1303^2 + 918^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2540533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2540537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1270266 + 1270267.

It is an arithmetic number, because the mean of its divisors is an integer number (1270267).

2^2540533 is an apocalyptic number.

It is an amenable number.

2540533 is a deficient number, since it is larger than the sum of its proper divisors (1).

2540533 is an equidigital number, since it uses as much as digits as its factorization.

2540533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 2540533 is about 1593.9049532516. The cubic root of 2540533 is about 136.4504420095.

Adding to 2540533 its reverse (3350452), we get a palindrome (5890985).

The spelling of 2540533 in words is "two million, five hundred forty thousand, five hundred thirty-three".