2563530321 has 24 divisors (see below), whose sum is σ = 3759865312. Its totient is φ = 1552478400.

The previous prime is 2563530301. The next prime is 2563530367. The reversal of 2563530321 is 1230353652.

2563530321 = T₁₁₀ + T₁₁₁ + ... + T₂₄₈₆.

It is not a de Polignac number, because 2563530321 - 2¹⁴ = 2563513937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2563530301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 861366 + ... + 864336.

Almost surely, 2^2563530321 is an apocalyptic number.

It is an amenable number.

2563530321 is a deficient number, since it is larger than the sum of its proper divisors (1196334991).

2563530321 is a wasteful number, since it uses less digits than its factorization.

2563530321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5373 (or 5362 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 30.

The square root of 2563530321 is about 50631.3175909930. The cubic root of 2563530321 is about 1368.6092980867.

Adding to 2563530321 its reverse (1230353652), we get a palindrome (3793883973).

The spelling of 2563530321 in words is "two billion, five hundred sixty-three million, five hundred thirty thousand, three hundred twenty-one".