2156315 has 8 divisors (see below), whose sum is σ = 2957280. Its totient is φ = 1478592.

The previous prime is 2156311. The next prime is 2156317. The reversal of 2156315 is 5136512.

2156315 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 2156315 - 2² = 2156311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2156311) 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, 30770 + ... + 30839.

It is an arithmetic number, because the mean of its divisors is an integer number (369660).

2^2156315 is an apocalyptic number.

2156315 is a deficient number, since it is larger than the sum of its proper divisors (800965).

2156315 is an equidigital number, since it uses as much as digits as its factorization.

2156315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61621.

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

The square root of 2156315 is about 1468.4396480618. The cubic root of 2156315 is about 129.1925294495.

The spelling of 2156315 in words is "two million, one hundred fifty-six thousand, three hundred fifteen".