2051711 has 4 divisors (see below), whose sum is σ = 2055672. Its totient is φ = 2047752.

The previous prime is 2051701. The next prime is 2051719. The reversal of 2051711 is 1171502.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2051711 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2051711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1061 + ... + 2286.

It is an arithmetic number, because the mean of its divisors is an integer number (513918).

2^2051711 is an apocalyptic number.

2051711 is a deficient number, since it is larger than the sum of its proper divisors (3961).

2051711 is an equidigital number, since it uses as much as digits as its factorization.

2051711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3960.

The product of its (nonzero) digits is 70, while the sum is 17.

The square root of 2051711 is about 1432.3794888227. The cubic root of 2051711 is about 127.0687415896.

The spelling of 2051711 in words is "two million, fifty-one thousand, seven hundred eleven".