2543132545 has 4 divisors (see below), whose sum is σ = 3051759060. Its totient is φ = 2034506032.

The previous prime is 2543132509. The next prime is 2543132567. The reversal of 2543132545 is 5452313452.

2543132545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 365230321 + 2177902224 = 19111^2 + 46668^2 .

It is a cyclic number.

It is not a de Polignac number, because 2543132545 - 2¹⁵ = 2543099777 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2543132545.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254313250 + ... + 254313259.

It is an arithmetic number, because the mean of its divisors is an integer number (762939765).

Almost surely, 2^2543132545 is an apocalyptic number.

It is an amenable number.

2543132545 is a deficient number, since it is larger than the sum of its proper divisors (508626515).

2543132545 is an equidigital number, since it uses as much as digits as its factorization.

2543132545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508626514.

The product of its digits is 72000, while the sum is 34.

The square root of 2543132545 is about 50429.4809114669. The cubic root of 2543132545 is about 1364.9696612470.

Adding to 2543132545 its reverse (5452313452), we get a palindrome (7995445997).

The spelling of 2543132545 in words is "two billion, five hundred forty-three million, one hundred thirty-two thousand, five hundred forty-five".