2521369 has 8 divisors (see below), whose sum is σ = 2597832. Its totient is φ = 2446080.

The previous prime is 2521367. The next prime is 2521373. The reversal of 2521369 is 9631252.

2521369 = T₁₂₉₅ + T₁₂₉₆ + T₁₂₉₇.

2521369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 78400 + 2442969 = 280^2 + 1563^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2521369 - 2¹ = 2521367 is a prime.

It is a super-2 number, since 2×2521369² = 12714603268322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2521361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5779 + ... + 6199.

It is an arithmetic number, because the mean of its divisors is an integer number (324729).

2^2521369 is an apocalyptic number.

2521369 is the 1297-th centered triangular number.

It is an amenable number.

2521369 is a deficient number, since it is larger than the sum of its proper divisors (76463).

2521369 is a wasteful number, since it uses less digits than its factorization.

2521369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587.

The product of its digits is 3240, while the sum is 28.

The square root of 2521369 is about 1587.8819225623. The cubic root of 2521369 is about 136.1064801917.

The spelling of 2521369 in words is "two million, five hundred twenty-one thousand, three hundred sixty-nine".