2155982 has 8 divisors (see below), whose sum is σ = 3278496. Its totient is φ = 1063152.

The previous prime is 2155963. The next prime is 2155999. The reversal of 2155982 is 2895512.

2155982 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 7238 + ... + 7529.

It is an arithmetic number, because the mean of its divisors is an integer number (409812).

2^2155982 is an apocalyptic number.

2155982 is a deficient number, since it is larger than the sum of its proper divisors (1122514).

2155982 is a wasteful number, since it uses less digits than its factorization.

2155982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14842.

The product of its digits is 7200, while the sum is 32.

The square root of 2155982 is about 1468.3262580231. The cubic root of 2155982 is about 129.1858787009.

The spelling of 2155982 in words is "two million, one hundred fifty-five thousand, nine hundred eighty-two".