2521131543 has 48 divisors (see below), whose sum is σ = 4255363840. Its totient is φ = 1408606848.

The previous prime is 2521131517. The next prime is 2521131563. The reversal of 2521131543 is 3451311252.

2521131543 is a `hidden beast` number, since 2 + 5 + 2 + 113 + 1 + 543 = 666.

It is not a de Polignac number, because 2521131543 - 2¹⁴ = 2521115159 is a prime.

It is a super-2 number, since 2×2521131543² = 12712208514219121698, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521131563) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 584571 + ... + 588867.

Almost surely, 2^2521131543 is an apocalyptic number.

2521131543 is a deficient number, since it is larger than the sum of its proper divisors (1734232297).

2521131543 is a wasteful number, since it uses less digits than its factorization.

2521131543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4516 (or 4513 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 2521131543 is about 50210.8707652038. The cubic root of 2521131543 is about 1361.0220732099.

Adding to 2521131543 its reverse (3451311252), we get a palindrome (5972442795).

The spelling of 2521131543 in words is "two billion, five hundred twenty-one million, one hundred thirty-one thousand, five hundred forty-three".