2155475 has 24 divisors (see below), whose sum is σ = 3109920. Its totient is φ = 1451520.

The previous prime is 2155463. The next prime is 2155477. The reversal of 2155475 is 5745512.

2155475 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2155475 - 2¹⁴ = 2139091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2155477) 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 23 ways as a sum of consecutive naturals, for example, 19019 + ... + 19131.

It is an arithmetic number, because the mean of its divisors is an integer number (129580).

2^2155475 is an apocalyptic number.

2155475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2155475 is a deficient number, since it is larger than the sum of its proper divisors (954445).

2155475 is a wasteful number, since it uses less digits than its factorization.

2155475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239 (or 234 counting only the distinct ones).

The product of its digits is 7000, while the sum is 29.

The square root of 2155475 is about 1468.1536023182. The cubic root of 2155475 is about 129.1757514711.

The spelling of 2155475 in words is "two million, one hundred fifty-five thousand, four hundred seventy-five".