2653891 has 4 divisors (see below), whose sum is σ = 2683800. Its totient is φ = 2623984.

The previous prime is 2653883. The next prime is 2653897. The reversal of 2653891 is 1983562.

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 2653891 - 2³ = 2653883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2653897) 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, 14821 + ... + 14998.

It is an arithmetic number, because the mean of its divisors is an integer number (670950).

2^2653891 is an apocalyptic number.

2653891 is a deficient number, since it is larger than the sum of its proper divisors (29909).

2653891 is an equidigital number, since it uses as much as digits as its factorization.

2653891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29908.

The product of its digits is 12960, while the sum is 34.

The square root of 2653891 is about 1629.0767323856. The cubic root of 2653891 is about 138.4504464603.

The spelling of 2653891 in words is "two million, six hundred fifty-three thousand, eight hundred ninety-one".