2520535543 has 4 divisors (see below), whose sum is σ = 2521165480. Its totient is φ = 2519905608.

The previous prime is 2520535531. The next prime is 2520535547. The reversal of 2520535543 is 3455350252.

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 2520535543 - 2²⁵ = 2486981111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2520535499 and 2520535508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2520535547) 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, 308928 + ... + 316981.

It is an arithmetic number, because the mean of its divisors is an integer number (630291370).

Almost surely, 2^2520535543 is an apocalyptic number.

2520535543 is a deficient number, since it is larger than the sum of its proper divisors (629937).

2520535543 is an equidigital number, since it uses as much as digits as its factorization.

2520535543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629936.

The product of its (nonzero) digits is 90000, while the sum is 34.

The square root of 2520535543 is about 50204.9354446353. The cubic root of 2520535543 is about 1360.9148154077.

Adding to 2520535543 its reverse (3455350252), we get a palindrome (5975885795).

The spelling of 2520535543 in words is "two billion, five hundred twenty million, five hundred thirty-five thousand, five hundred forty-three".