2523491 has 4 divisors (see below), whose sum is σ = 2633232. Its totient is φ = 2413752.

The previous prime is 2523487. The next prime is 2523503. The reversal of 2523491 is 1943252.

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 2523491 - 2² = 2523487 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2523491.

It is not an unprimeable number, because it can be changed into a prime (2523401) 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, 54836 + ... + 54881.

It is an arithmetic number, because the mean of its divisors is an integer number (658308).

2^2523491 is an apocalyptic number.

2523491 is a deficient number, since it is larger than the sum of its proper divisors (109741).

2523491 is a wasteful number, since it uses less digits than its factorization.

2523491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109740.

The product of its digits is 2160, while the sum is 26.

The square root of 2523491 is about 1588.5499677379. The cubic root of 2523491 is about 136.1446521749.

The spelling of 2523491 in words is "two million, five hundred twenty-three thousand, four hundred ninety-one".