2521131563 has 2 divisors, whose sum is σ = 2521131564. Its totient is φ = 2521131562.

The previous prime is 2521131517. The next prime is 2521131593. The reversal of 2521131563 is 3651311252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2521131563 - 2¹² = 2521127467 is a prime.

It is a super-2 number, since 2×2521131563² = 12712208715909645938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2521131593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260565781 + 1260565782.

It is an arithmetic number, because the mean of its divisors is an integer number (1260565782).

Almost surely, 2^2521131563 is an apocalyptic number.

2521131563 is a deficient number, since it is larger than the sum of its proper divisors (1).

2521131563 is an equidigital number, since it uses as much as digits as its factorization.

2521131563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5400, while the sum is 29.

The square root of 2521131563 is about 50210.8709643639. The cubic root of 2521131563 is about 1361.0220768089.

The spelling of 2521131563 in words is "two billion, five hundred twenty-one million, one hundred thirty-one thousand, five hundred sixty-three".