2156079 has 8 divisors (see below), whose sum is σ = 2897920. Its totient is φ = 1425816.

The previous prime is 2156071. The next prime is 2156083. The reversal of 2156079 is 9706512.

2156079 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 not a de Polignac number, because 2156079 - 2³ = 2156071 is a prime.

It is a Duffinian number.

2156079 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156071) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2449 + ... + 3210.

It is an arithmetic number, because the mean of its divisors is an integer number (362240).

2^2156079 is an apocalyptic number.

2156079 is a deficient number, since it is larger than the sum of its proper divisors (741841).

2156079 is a wasteful number, since it uses less digits than its factorization.

2156079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5789.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 2156079 is about 1468.3592884577. The cubic root of 2156079 is about 129.1878160767.

The spelling of 2156079 in words is "two million, one hundred fifty-six thousand, seventy-nine".