2546391 has 4 divisors (see below), whose sum is σ = 3395192. Its totient is φ = 1697592.

The previous prime is 2546363. The next prime is 2546393. The reversal of 2546391 is 1936452.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2546391 - 2¹¹ = 2544343 is a prime.

It is a D-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 (2546393) 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, 424396 + ... + 424401.

It is an arithmetic number, because the mean of its divisors is an integer number (848798).

2^2546391 is an apocalyptic number.

2546391 is a deficient number, since it is larger than the sum of its proper divisors (848801).

2546391 is an equidigital number, since it uses as much as digits as its factorization.

2546391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848800.

The product of its digits is 6480, while the sum is 30.

The square root of 2546391 is about 1595.7415204224. The cubic root of 2546391 is about 136.5552380120. Note that the first 3 decimals are identical.

The spelling of 2546391 in words is "two million, five hundred forty-six thousand, three hundred ninety-one".