2145475 has 6 divisors (see below), whose sum is σ = 2660420. Its totient is φ = 1716360.

The previous prime is 2145469. The next prime is 2145487. The reversal of 2145475 is 5745412.

It is not a de Polignac number, because 2145475 - 2⁵ = 2145443 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42885 + ... + 42934.

2^2145475 is an apocalyptic number.

2145475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2145475 is a deficient number, since it is larger than the sum of its proper divisors (514945).

2145475 is an equidigital number, since it uses as much as digits as its factorization.

2145475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85829 (or 85824 counting only the distinct ones).

The product of its digits is 5600, while the sum is 28.

The square root of 2145475 is about 1464.7440049374. The cubic root of 2145475 is about 128.9756779657.

The spelling of 2145475 in words is "two million, one hundred forty-five thousand, four hundred seventy-five".