2501565 has 16 divisors (see below), whose sum is σ = 4366656. Its totient is φ = 1212800.

The previous prime is 2501563. The next prime is 2501573. The reversal of 2501565 is 5651052.

It is not a de Polignac number, because 2501565 - 2¹ = 2501563 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2501563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7416 + ... + 7745.

It is an arithmetic number, because the mean of its divisors is an integer number (272916).

2^2501565 is an apocalyptic number.

It is an amenable number.

2501565 is a deficient number, since it is larger than the sum of its proper divisors (1865091).

2501565 is a wasteful number, since it uses less digits than its factorization.

2501565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15180.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 2501565 is about 1581.6336491109. The cubic root of 2501565 is about 135.7491953461.

The spelling of 2501565 in words is "two million, five hundred one thousand, five hundred sixty-five".