2521339 has 2 divisors, whose sum is σ = 2521340. Its totient is φ = 2521338.

The previous prime is 2521327. The next prime is 2521361. The reversal of 2521339 is 9331252.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2521339 - 2⁵ = 2521307 is a prime.

It is an Ulam number.

2521339 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2521039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260669 + 1260670.

It is an arithmetic number, because the mean of its divisors is an integer number (1260670).

2^2521339 is an apocalyptic number.

2521339 is a deficient number, since it is larger than the sum of its proper divisors (1).

2521339 is an equidigital number, since it uses as much as digits as its factorization.

2521339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620, while the sum is 25.

The square root of 2521339 is about 1587.8724759879. The cubic root of 2521339 is about 136.1059403777.

It can be divided in two parts, 25213 and 39, that added together give a palindrome (25252).

The spelling of 2521339 in words is "two million, five hundred twenty-one thousand, three hundred thirty-nine".