2130091 has 4 divisors (see below), whose sum is σ = 2179672. Its totient is φ = 2080512.

The previous prime is 2130061. The next prime is 2130101. The reversal of 2130091 is 1900312.

2130091 is nontrivially palindromic in base 6.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2130091 - 2⁹ = 2129579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2130001) 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 3 ways as a sum of consecutive naturals, for example, 24726 + ... + 24811.

It is an arithmetic number, because the mean of its divisors is an integer number (544918).

2^2130091 is an apocalyptic number.

2130091 is a deficient number, since it is larger than the sum of its proper divisors (49581).

2130091 is an equidigital number, since it uses as much as digits as its factorization.

2130091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49580.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 2130091 is about 1459.4831276860. The cubic root of 2130091 is about 128.6666674124. Note that the first 5 decimals are identical.

The spelling of 2130091 in words is "two million, one hundred thirty thousand, ninety-one".