2521046531 has 4 divisors (see below), whose sum is σ = 2607979200. Its totient is φ = 2434113864.

The previous prime is 2521046519. The next prime is 2521046551. The reversal of 2521046531 is 1356401252.

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 2521046531 - 2¹⁰ = 2521045507 is a prime.

It is a super-2 number, since 2×2521046531² = 12711351222934267922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 86932639 = 2521046531 / (2 + 5 + 2 + 1 + 0 + 4 + 6 + 5 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2521046494 and 2521046503.

It is not an unprimeable number, because it can be changed into a prime (2521046551) 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, 43466291 + ... + 43466348.

It is an arithmetic number, because the mean of its divisors is an integer number (651994800).

Almost surely, 2^2521046531 is an apocalyptic number.

2521046531 is a deficient number, since it is larger than the sum of its proper divisors (86932669).

2521046531 is an equidigital number, since it uses as much as digits as its factorization.

2521046531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86932668.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 2521046531 is about 50210.0242083192. The cubic root of 2521046531 is about 1361.0067752498.

Adding to 2521046531 its reverse (1356401252), we get a palindrome (3877447783).

The spelling of 2521046531 in words is "two billion, five hundred twenty-one million, forty-six thousand, five hundred thirty-one".