2145473 has 4 divisors (see below), whose sum is σ = 2340528. Its totient is φ = 1950420.

The previous prime is 2145469. The next prime is 2145487. The reversal of 2145473 is 3745412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2145473 - 2² = 2145469 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2145433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97511 + ... + 97532.

It is an arithmetic number, because the mean of its divisors is an integer number (585132).

2^2145473 is an apocalyptic number.

It is an amenable number.

2145473 is a deficient number, since it is larger than the sum of its proper divisors (195055).

2145473 is a wasteful number, since it uses less digits than its factorization.

2145473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195054.

The product of its digits is 3360, while the sum is 26.

The square root of 2145473 is about 1464.7433222241. The cubic root of 2145473 is about 128.9756378889.

The spelling of 2145473 in words is "two million, one hundred forty-five thousand, four hundred seventy-three".