2156235 has 16 divisors (see below), whose sum is σ = 3531264. Its totient is φ = 1122912.

The previous prime is 2156221. The next prime is 2156251. The reversal of 2156235 is 5326512.

2156235 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2156235 - 2⁶ = 2156171 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 1027 + ... + 2316.

It is an arithmetic number, because the mean of its divisors is an integer number (220704).

2^2156235 is an apocalyptic number.

2156235 is a deficient number, since it is larger than the sum of its proper divisors (1375029).

2156235 is a wasteful number, since it uses less digits than its factorization.

2156235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3394.

The product of its digits is 1800, while the sum is 24.

The square root of 2156235 is about 1468.4124080108. The cubic root of 2156235 is about 129.1909317345.

The spelling of 2156235 in words is "two million, one hundred fifty-six thousand, two hundred thirty-five".