2145575 has 12 divisors (see below), whose sum is σ = 2801160. Its totient is φ = 1625760.

The previous prime is 2145551. The next prime is 2145617. The reversal of 2145575 is 5755412.

2145575 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 2145575 - 2¹⁰ = 2144551 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 1784 + ... + 2733.

It is an arithmetic number, because the mean of its divisors is an integer number (233430).

2^2145575 is an apocalyptic number.

2145575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2145575 is a deficient number, since it is larger than the sum of its proper divisors (655585).

2145575 is a wasteful number, since it uses less digits than its factorization.

2145575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4546 (or 4541 counting only the distinct ones).

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

The square root of 2145575 is about 1464.7781401973. The cubic root of 2145575 is about 128.9776817748.

The spelling of 2145575 in words is "two million, one hundred forty-five thousand, five hundred seventy-five".