2101291 has 8 divisors (see below), whose sum is σ = 2195424. Its totient is φ = 2009280.

The previous prime is 2101283. The next prime is 2101313. The reversal of 2101291 is 1921012.

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 2101291 - 2³ = 2101283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1690 + ... + 2656.

It is an arithmetic number, because the mean of its divisors is an integer number (274428).

2^2101291 is an apocalyptic number.

2101291 is a deficient number, since it is larger than the sum of its proper divisors (94133).

2101291 is an equidigital number, since it uses as much as digits as its factorization.

2101291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 2101291 is about 1449.5830434991. The cubic root of 2101291 is about 128.0841528327.

The spelling of 2101291 in words is "two million, one hundred one thousand, two hundred ninety-one".