2523919 has 4 divisors (see below), whose sum is σ = 2585520. Its totient is φ = 2462320.

The previous prime is 2523907. The next prime is 2523923. The reversal of 2523919 is 9193252.

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 2523919 - 2⁵ = 2523887 is a prime.

It is a super-3 number, since 3×2523919³ = 48233357471134081677, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2523949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30739 + ... + 30820.

It is an arithmetic number, because the mean of its divisors is an integer number (646380).

2^2523919 is an apocalyptic number.

2523919 is a deficient number, since it is larger than the sum of its proper divisors (61601).

2523919 is an equidigital number, since it uses as much as digits as its factorization.

2523919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61600.

The product of its digits is 4860, while the sum is 31.

The square root of 2523919 is about 1588.6846760764. The cubic root of 2523919 is about 136.1523487372.

The spelling of 2523919 in words is "two million, five hundred twenty-three thousand, nine hundred nineteen".