2149775 has 6 divisors (see below), whose sum is σ = 2665752. Its totient is φ = 1719800.

The previous prime is 2149727. The next prime is 2149781. The reversal of 2149775 is 5779412.

2149775 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 2149775 - 2⁶ = 2149711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 42971 + ... + 43020.

It is an arithmetic number, because the mean of its divisors is an integer number (444292).

2^2149775 is an apocalyptic number.

2149775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2149775 is a deficient number, since it is larger than the sum of its proper divisors (515977).

2149775 is an equidigital number, since it uses as much as digits as its factorization.

2149775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86001 (or 85996 counting only the distinct ones).

The product of its digits is 17640, while the sum is 35.

The square root of 2149775 is about 1466.2111034909. The cubic root of 2149775 is about 129.0617855980.

The spelling of 2149775 in words is "two million, one hundred forty-nine thousand, seven hundred seventy-five".