2153867 has 4 divisors (see below), whose sum is σ = 2194560. Its totient is φ = 2113176.

The previous prime is 2153861. The next prime is 2153873. The reversal of 2153867 is 7683512.

It is a happy number.

2153867 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 (2153861) and next prime (2153873).

It is a cyclic number.

It is not a de Polignac number, because 2153867 - 2¹⁴ = 2137483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2153861) 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, 20267 + ... + 20372.

It is an arithmetic number, because the mean of its divisors is an integer number (548640).

2^2153867 is an apocalyptic number.

2153867 is a deficient number, since it is larger than the sum of its proper divisors (40693).

2153867 is an equidigital number, since it uses as much as digits as its factorization.

2153867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40692.

The product of its digits is 10080, while the sum is 32.

The square root of 2153867 is about 1467.6058735233. The cubic root of 2153867 is about 129.1436214639.

It can be divided in two parts, 215 and 3867, that multiplied together give a triangular number (831405 = T₁₂₈₉).

The spelling of 2153867 in words is "two million, one hundred fifty-three thousand, eight hundred sixty-seven".