2145075 has 24 divisors (see below), whose sum is σ = 3647088.
Its totient is φ = 1111680.
The previous prime is 2145067. The next prime is 2145083. The reversal of 2145075 is 5705412.
2145075 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is an interprime number because it is at equal distance from previous prime (2145067) and next prime (2145083).
It is not a de Polignac number, because 2145075 - 23 = 2145067 is a prime.
It is a plaindrome in base 11.
It is a nialpdrome in base 12.
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 23 ways as a sum of consecutive naturals, for example, 2389 + ... + 3161.
It is an arithmetic number, because the mean of its divisors is an integer number (151962).
22145075 is an apocalyptic number.
2145075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.
2145075 is a deficient number, since it is larger than the sum of its proper divisors (1502013).
2145075 is a wasteful number, since it uses less digits than its factorization.
2145075 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 823 (or 818 counting only the distinct ones).
The product of its (nonzero) digits is 1400, while the sum is 24.
The square root of 2145075 is about 1464.6074559417.
The cubic root of 2145075 is about 128.9676621063.
The spelling of 2145075 in words is "two million, one hundred forty-five thousand, seventy-five".