2125891 has 8 divisors (see below), whose sum is σ = 2293200. Its totient is φ = 1964160.

The previous prime is 2125889. The next prime is 2125919. The reversal of 2125891 is 1985212.

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 2125891 - 2¹ = 2125889 is a prime.

It is a super-3 number, since 3×2125891³ = 28823335356971168913, which contains 333 as substring.

It is a Duffinian number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (2125801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 586 + ... + 2143.

It is an arithmetic number, because the mean of its divisors is an integer number (286650).

2^2125891 is an apocalyptic number.

2125891 is a deficient number, since it is larger than the sum of its proper divisors (167309).

2125891 is a wasteful number, since it uses less digits than its factorization.

2125891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2789.

The product of its digits is 1440, while the sum is 28.

The square root of 2125891 is about 1458.0435521616. The cubic root of 2125891 is about 128.5820457429.

The spelling of 2125891 in words is "two million, one hundred twenty-five thousand, eight hundred ninety-one".