2155875 has 16 divisors (see below), whose sum is σ = 3588000. Its totient is φ = 1149600.

The previous prime is 2155861. The next prime is 2155877. The reversal of 2155875 is 5785512.

It is a happy number.

It is not a de Polignac number, because 2155875 - 2¹⁰ = 2154851 is a prime.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2155877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2500 + ... + 3249.

It is an arithmetic number, because the mean of its divisors is an integer number (224250).

2^2155875 is an apocalyptic number.

2155875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2155875 is a deficient number, since it is larger than the sum of its proper divisors (1432125).

2155875 is an equidigital number, since it uses as much as digits as its factorization.

2155875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5767 (or 5757 counting only the distinct ones).

The product of its digits is 14000, while the sum is 33.

The square root of 2155875 is about 1468.2898215271. The cubic root of 2155875 is about 129.1837415281.

The spelling of 2155875 in words is "two million, one hundred fifty-five thousand, eight hundred seventy-five".