2148591 has 8 divisors (see below), whose sum is σ = 2989440. Its totient is φ = 1370072.

The previous prime is 2148583. The next prime is 2148599. The reversal of 2148591 is 1958412.

It is a happy number.

2148591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2148583) and next prime (2148599).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2148591 - 2³ = 2148583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2148599) 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 7 ways as a sum of consecutive naturals, for example, 15501 + ... + 15638.

It is an arithmetic number, because the mean of its divisors is an integer number (373680).

2^2148591 is an apocalyptic number.

2148591 is a deficient number, since it is larger than the sum of its proper divisors (840849).

2148591 is a wasteful number, since it uses less digits than its factorization.

2148591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31165.

The product of its digits is 2880, while the sum is 30.

The square root of 2148591 is about 1465.8072861055. The cubic root of 2148591 is about 129.0380874255.

The spelling of 2148591 in words is "two million, one hundred forty-eight thousand, five hundred ninety-one".