2134591 has 4 divisors (see below), whose sum is σ = 2140992. Its totient is φ = 2128192.

The previous prime is 2134589. The next prime is 2134609. The reversal of 2134591 is 1954312.

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 2134591 - 2¹ = 2134589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2134991) 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, 2671 + ... + 3376.

It is an arithmetic number, because the mean of its divisors is an integer number (535248).

2^2134591 is an apocalyptic number.

2134591 is a deficient number, since it is larger than the sum of its proper divisors (6401).

2134591 is an equidigital number, since it uses as much as digits as its factorization.

2134591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6400.

The product of its digits is 1080, while the sum is 25.

The square root of 2134591 is about 1461.0239559980. The cubic root of 2134591 is about 128.7572101407.

The spelling of 2134591 in words is "two million, one hundred thirty-four thousand, five hundred ninety-one".