2057565 has 16 divisors (see below), whose sum is σ = 3312000. Its totient is φ = 1090752.

The previous prime is 2057543. The next prime is 2057569. The reversal of 2057565 is 5657502.

It is not a de Polignac number, because 2057565 - 2⁸ = 2057309 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2057569) 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, 3136 + ... + 3734.

It is an arithmetic number, because the mean of its divisors is an integer number (207000).

2^2057565 is an apocalyptic number.

It is an amenable number.

2057565 is a deficient number, since it is larger than the sum of its proper divisors (1254435).

2057565 is a wasteful number, since it uses less digits than its factorization.

2057565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836.

The product of its (nonzero) digits is 10500, while the sum is 30.

The square root of 2057565 is about 1434.4214861748. The cubic root of 2057565 is about 127.1894788774.

It can be divided in two parts, 205756 and 5, that added together give a triangular number (205761 = T₆₄₁).

The spelling of 2057565 in words is "two million, fifty-seven thousand, five hundred sixty-five".