2149565 has 32 divisors (see below), whose sum is σ = 3162240. Its totient is φ = 1393920.

The previous prime is 2149559. The next prime is 2149573. The reversal of 2149565 is 5659412.

It is a happy number.

2149565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2149565 - 2⁶ = 2149501 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 113126 + ... + 113144.

It is an arithmetic number, because the mean of its divisors is an integer number (98820).

2^2149565 is an apocalyptic number.

It is an amenable number.

2149565 is a deficient number, since it is larger than the sum of its proper divisors (1012675).

2149565 is a wasteful number, since it uses less digits than its factorization.

2149565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74 (or 52 counting only the distinct ones).

The product of its digits is 10800, while the sum is 32.

The square root of 2149565 is about 1466.1394885890. The cubic root of 2149565 is about 129.0575830097.

It can be divided in two parts, 214 and 9565, that added together give a palindrome (9779).

The spelling of 2149565 in words is "two million, one hundred forty-nine thousand, five hundred sixty-five".