2132491 has 4 divisors (see below), whose sum is σ = 2225232. Its totient is φ = 2039752.

The previous prime is 2132483. The next prime is 2132513. The reversal of 2132491 is 1942312.

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 2132491 - 2³ = 2132483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2132401) 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, 46336 + ... + 46381.

It is an arithmetic number, because the mean of its divisors is an integer number (556308).

2^2132491 is an apocalyptic number.

2132491 is a deficient number, since it is larger than the sum of its proper divisors (92741).

2132491 is an equidigital number, since it uses as much as digits as its factorization.

2132491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92740.

The product of its digits is 432, while the sum is 22.

The square root of 2132491 is about 1460.3051051065. The cubic root of 2132491 is about 128.7149727192.

It can be divided in two parts, 213 and 2491, that added together give a square (2704 = 52²).

The spelling of 2132491 in words is "two million, one hundred thirty-two thousand, four hundred ninety-one".