2161532 has 6 divisors (see below), whose sum is σ = 3782688. Its totient is φ = 1080764.

The previous prime is 2161513. The next prime is 2161553. The reversal of 2161532 is 2351612.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 270188 + ... + 270195.

It is an arithmetic number, because the mean of its divisors is an integer number (630448).

2^2161532 is an apocalyptic number.

It is an amenable number.

2161532 is a deficient number, since it is larger than the sum of its proper divisors (1621156).

2161532 is a wasteful number, since it uses less digits than its factorization.

2161532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540387 (or 540385 counting only the distinct ones).

The product of its digits is 360, while the sum is 20.

The square root of 2161532 is about 1470.2149502709. The cubic root of 2161532 is about 129.2966352346.

The spelling of 2161532 in words is "two million, one hundred sixty-one thousand, five hundred thirty-two".