2521263 has 16 divisors (see below), whose sum is σ = 3481056. Its totient is φ = 1622400.

The previous prime is 2521249. The next prime is 2521271. The reversal of 2521263 is 3621252.

It is not a de Polignac number, because 2521263 - 2¹⁷ = 2390191 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15981 + ... + 16137.

It is an arithmetic number, because the mean of its divisors is an integer number (217566).

2^2521263 is an apocalyptic number.

2521263 is a deficient number, since it is larger than the sum of its proper divisors (959793).

2521263 is a wasteful number, since it uses less digits than its factorization.

2521263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314.

The product of its digits is 720, while the sum is 21.

The square root of 2521263 is about 1587.8485444147. The cubic root of 2521263 is about 136.1045728298.

The spelling of 2521263 in words is "two million, five hundred twenty-one thousand, two hundred sixty-three".