2545940543 has 2 divisors, whose sum is σ = 2545940544. Its totient is φ = 2545940542.

The previous prime is 2545940533. The next prime is 2545940557. The reversal of 2545940543 is 3450495452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2545940543 - 2²² = 2541746239 is a prime.

It is a super-2 number, since 2×2545940543² = 12963626496982269698, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2545940543.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2545940533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1272970271 + 1272970272.

It is an arithmetic number, because the mean of its divisors is an integer number (1272970272).

Almost surely, 2^2545940543 is an apocalyptic number.

2545940543 is a deficient number, since it is larger than the sum of its proper divisors (1).

2545940543 is an equidigital number, since it uses as much as digits as its factorization.

2545940543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432000, while the sum is 41.

The square root of 2545940543 is about 50457.3140684282. The cubic root of 2545940543 is about 1365.4718532226.

The spelling of 2545940543 in words is "two billion, five hundred forty-five million, nine hundred forty thousand, five hundred forty-three".