2156141 has 4 divisors (see below), whose sum is σ = 2322012. Its totient is φ = 1990272.

The previous prime is 2156123. The next prime is 2156159. The reversal of 2156141 is 1416512.

2156141 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2156123) and next prime (2156159).

It can be written as a sum of positive squares in 2 ways, for example, as 136900 + 2019241 = 370^2 + 1421^2 .

It is a cyclic number.

It is not a de Polignac number, because 2156141 - 2¹⁴ = 2139757 is a prime.

It is a super-3 number, since 3×2156141³ = 30071336372163333663, which contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156111) 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 3 ways as a sum of consecutive naturals, for example, 82916 + ... + 82941.

It is an arithmetic number, because the mean of its divisors is an integer number (580503).

2^2156141 is an apocalyptic number.

It is an amenable number.

2156141 is a deficient number, since it is larger than the sum of its proper divisors (165871).

2156141 is a wasteful number, since it uses less digits than its factorization.

2156141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165870.

The product of its digits is 240, while the sum is 20.

The square root of 2156141 is about 1468.3804003050. The cubic root of 2156141 is about 129.1890543690.

The spelling of 2156141 in words is "two million, one hundred fifty-six thousand, one hundred forty-one".