2521323 has 24 divisors (see below), whose sum is σ = 4299776. Its totient is φ = 1393200.

The previous prime is 2521307. The next prime is 2521327. The reversal of 2521323 is 3231252.

It is not a de Polignac number, because 2521323 - 2⁴ = 2521307 is a prime.

It is a Duffinian number.

2521323 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2521296 and 2521305.

It is not an unprimeable number, because it can be changed into a prime (2521327) 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 23 ways as a sum of consecutive naturals, for example, 1308 + ... + 2598.

2^2521323 is an apocalyptic number.

2521323 is a deficient number, since it is larger than the sum of its proper divisors (1778453).

2521323 is a wasteful number, since it uses less digits than its factorization.

2521323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1335 (or 1332 counting only the distinct ones).

The product of its digits is 360, while the sum is 18.

The square root of 2521323 is about 1587.8674377920. The cubic root of 2521323 is about 136.1056524752.

Adding to 2521323 its reverse (3231252), we get a palindrome (5752575).

The spelling of 2521323 in words is "two million, five hundred twenty-one thousand, three hundred twenty-three".