2538491 has 4 divisors (see below), whose sum is σ = 2687832. Its totient is φ = 2389152.

The previous prime is 2538479. The next prime is 2538493. The reversal of 2538491 is 1948352.

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 2538491 - 2⁶ = 2538427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2538493) 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, 74645 + ... + 74678.

It is an arithmetic number, because the mean of its divisors is an integer number (671958).

2^2538491 is an apocalyptic number.

2538491 is a deficient number, since it is larger than the sum of its proper divisors (149341).

2538491 is a wasteful number, since it uses less digits than its factorization.

2538491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149340.

The product of its digits is 8640, while the sum is 32.

The square root of 2538491 is about 1593.2642593117. The cubic root of 2538491 is about 136.4138740284.

The spelling of 2538491 in words is "two million, five hundred thirty-eight thousand, four hundred ninety-one".