2401591 has 4 divisors (see below), whose sum is σ = 2506032. Its totient is φ = 2297152.

The previous prime is 2401583. The next prime is 2401603. The reversal of 2401591 is 1951042.

2401591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1951042 = 2 ⋅975521.

It is a cyclic number.

It is not a de Polignac number, because 2401591 - 2³ = 2401583 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a plaindrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2401501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52186 + ... + 52231.

It is an arithmetic number, because the mean of its divisors is an integer number (626508).

2^2401591 is an apocalyptic number.

2401591 is a deficient number, since it is larger than the sum of its proper divisors (104441).

2401591 is a wasteful number, since it uses less digits than its factorization.

2401591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104440.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 2401591 is about 1549.7067464524. The cubic root of 2401591 is about 133.9161686987.

It can be divided in two parts, 2401 and 591, that added together give a palindrome (2992).

The spelling of 2401591 in words is "two million, four hundred one thousand, five hundred ninety-one".