2161593 has 16 divisors (see below), whose sum is σ = 3660160. Its totient is φ = 1235088.

The previous prime is 2161591. The next prime is 2161613. The reversal of 2161593 is 3951612.

It is not a de Polignac number, because 2161593 - 2¹ = 2161591 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2161591) 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, 5530 + ... + 5907.

It is an arithmetic number, because the mean of its divisors is an integer number (228760).

2^2161593 is an apocalyptic number.

It is an amenable number.

2161593 is a deficient number, since it is larger than the sum of its proper divisors (1498567).

2161593 is a wasteful number, since it uses less digits than its factorization.

2161593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11453 (or 11447 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 2161593 is about 1470.2356953904. The cubic root of 2161593 is about 129.2978515047.

The spelling of 2161593 in words is "two million, one hundred sixty-one thousand, five hundred ninety-three".