2156135 has 8 divisors (see below), whose sum is σ = 2700000. Its totient is φ = 1649824.

The previous prime is 2156123. The next prime is 2156159. The reversal of 2156135 is 5316512.

2156135 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 cyclic number.

It is not a de Polignac number, because 2156135 - 2⁶ = 2156071 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a self number, because there is not a number n which added to its sum of digits gives 2156135.

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 7 ways as a sum of consecutive naturals, for example, 9260 + ... + 9489.

It is an arithmetic number, because the mean of its divisors is an integer number (337500).

2^2156135 is an apocalyptic number.

2156135 is a deficient number, since it is larger than the sum of its proper divisors (543865).

2156135 is a wasteful number, since it uses less digits than its factorization.

2156135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18777.

The product of its digits is 900, while the sum is 23.

The square root of 2156135 is about 1468.3783572363. The cubic root of 2156135 is about 129.1889345353.

The spelling of 2156135 in words is "two million, one hundred fifty-six thousand, one hundred thirty-five".