2107491 has 4 divisors (see below), whose sum is σ = 2809992. Its totient is φ = 1404992.

The previous prime is 2107451. The next prime is 2107529. The reversal of 2107491 is 1947012.

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 2107491 - 2¹³ = 2099299 is a prime.

It is a D-number.

2107491 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2107451) 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, 351246 + ... + 351251.

It is an arithmetic number, because the mean of its divisors is an integer number (702498).

2^2107491 is an apocalyptic number.

2107491 is a deficient number, since it is larger than the sum of its proper divisors (702501).

2107491 is an equidigital number, since it uses as much as digits as its factorization.

2107491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702500.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 2107491 is about 1451.7200143278. The cubic root of 2107491 is about 128.2100027647.

The spelling of 2107491 in words is "two million, one hundred seven thousand, four hundred ninety-one".