2801591 has 4 divisors (see below), whose sum is σ = 3017112. Its totient is φ = 2586072.

The previous prime is 2801587. The next prime is 2801593. The reversal of 2801591 is 1951082.

It is a happy number.

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 2801591 - 2² = 2801587 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 2801591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2801593) 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, 107741 + ... + 107766.

It is an arithmetic number, because the mean of its divisors is an integer number (754278).

2^2801591 is an apocalyptic number.

2801591 is a deficient number, since it is larger than the sum of its proper divisors (215521).

2801591 is a wasteful number, since it uses less digits than its factorization.

2801591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215520.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 2801591 is about 1673.7953877341. The cubic root of 2801591 is about 140.9726654253.

The spelling of 2801591 in words is "two million, eight hundred one thousand, five hundred ninety-one".