2056571 has 16 divisors (see below), whose sum is σ = 2393088. Its totient is φ = 1749600.

The previous prime is 2056553. The next prime is 2056573. The reversal of 2056571 is 1756502.

It is a cyclic number.

It is not a de Polignac number, because 2056571 - 2¹⁸ = 1794427 is a prime.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 2056571.

It is not an unprimeable number, because it can be changed into a prime (2056573) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12536 + ... + 12698.

It is an arithmetic number, because the mean of its divisors is an integer number (149568).

2^2056571 is an apocalyptic number.

2056571 is a deficient number, since it is larger than the sum of its proper divisors (336517).

2056571 is a wasteful number, since it uses less digits than its factorization.

2056571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 2056571 is about 1434.0749631731. The cubic root of 2056571 is about 127.1689940315.

It can be divided in two parts, 205 and 6571, that added together give a palindrome (6776).

The spelling of 2056571 in words is "two million, fifty-six thousand, five hundred seventy-one".