2523139 has 2 divisors, whose sum is σ = 2523140. Its totient is φ = 2523138.

The previous prime is 2523133. The next prime is 2523149. The reversal of 2523139 is 9313252.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2523139 - 2⁵ = 2523107 is a prime.

It is not a weakly prime, because it can be changed into another prime (2523133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1261569 + 1261570.

It is an arithmetic number, because the mean of its divisors is an integer number (1261570).

2^2523139 is an apocalyptic number.

2523139 is a deficient number, since it is larger than the sum of its proper divisors (1).

2523139 is an equidigital number, since it uses as much as digits as its factorization.

2523139 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 2523139 is about 1588.4391710103. The cubic root of 2523139 is about 136.1383216396.

It can be divided in two parts, 2523 and 139, that added together give a palindrome (2662).

The spelling of 2523139 in words is "two million, five hundred twenty-three thousand, one hundred thirty-nine".