2145175 has 12 divisors (see below), whose sum is σ = 2711880. Its totient is φ = 1682720.

The previous prime is 2145173. The next prime is 2145191. The reversal of 2145175 is 5715412.

It is not a de Polignac number, because 2145175 - 2¹ = 2145173 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145173) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 516 + ... + 2134.

It is an arithmetic number, because the mean of its divisors is an integer number (225990).

2^2145175 is an apocalyptic number.

2145175 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2145175 is a deficient number, since it is larger than the sum of its proper divisors (566705).

2145175 is a wasteful number, since it uses less digits than its factorization.

2145175 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1682 (or 1677 counting only the distinct ones).

The product of its digits is 1400, while the sum is 25.

The square root of 2145175 is about 1464.6415943841. The cubic root of 2145175 is about 128.9696661646.

The spelling of 2145175 in words is "two million, one hundred forty-five thousand, one hundred seventy-five".