2521319 has 4 divisors (see below), whose sum is σ = 2654040. Its totient is φ = 2388600.

The previous prime is 2521307. The next prime is 2521327. The reversal of 2521319 is 9131252.

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 2521319 - 2⁸ = 2521063 is a prime.

It is a super-2 number, since 2×2521319² = 12714098999522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2521294 and 2521303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521339) 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 3 ways as a sum of consecutive naturals, for example, 66332 + ... + 66369.

It is an arithmetic number, because the mean of its divisors is an integer number (663510).

2^2521319 is an apocalyptic number.

2521319 is a deficient number, since it is larger than the sum of its proper divisors (132721).

2521319 is a wasteful number, since it uses less digits than its factorization.

2521319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132720.

The product of its digits is 540, while the sum is 23.

The square root of 2521319 is about 1587.8661782405. The cubic root of 2521319 is about 136.1055804994.

The spelling of 2521319 in words is "two million, five hundred twenty-one thousand, three hundred nineteen".