2155893 has 8 divisors (see below), whose sum is σ = 2902848. Its totient is φ = 1423104.

The previous prime is 2155883. The next prime is 2155931. The reversal of 2155893 is 3985512.

2155893 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 not a de Polignac number, because 2155893 - 2⁴ = 2155877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155883) 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, 3180 + ... + 3797.

It is an arithmetic number, because the mean of its divisors is an integer number (362856).

2^2155893 is an apocalyptic number.

It is an amenable number.

2155893 is a deficient number, since it is larger than the sum of its proper divisors (746955).

2155893 is a wasteful number, since it uses less digits than its factorization.

2155893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7083.

The product of its digits is 10800, while the sum is 33.

The square root of 2155893 is about 1468.2959510943. The cubic root of 2155893 is about 129.1841010575.

Adding to 2155893 its sum of digits (33), we get a triangular number (2155926 = T₂₀₇₆).

The spelling of 2155893 in words is "two million, one hundred fifty-five thousand, eight hundred ninety-three".