2520605543 has 4 divisors (see below), whose sum is σ = 2529705480. Its totient is φ = 2511505608.

The previous prime is 2520605497. The next prime is 2520605561. The reversal of 2520605543 is 3455060252.

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

It is a cyclic number.

It is not a de Polignac number, because 2520605543 - 2⁸ = 2520605287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2520625543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4549553 + ... + 4550106.

It is an arithmetic number, because the mean of its divisors is an integer number (632426370).

Almost surely, 2^2520605543 is an apocalyptic number.

2520605543 is a deficient number, since it is larger than the sum of its proper divisors (9099937).

2520605543 is an equidigital number, since it uses as much as digits as its factorization.

2520605543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9099936.

The product of its (nonzero) digits is 36000, while the sum is 32.

The square root of 2520605543 is about 50205.6325824105. The cubic root of 2520605543 is about 1360.9274136769.

Adding to 2520605543 its reverse (3455060252), we get a palindrome (5975665795).

The spelling of 2520605543 in words is "two billion, five hundred twenty million, six hundred five thousand, five hundred forty-three".