2045573 has 4 divisors (see below), whose sum is σ = 2116140. Its totient is φ = 1975008.

The previous prime is 2045569. The next prime is 2045587. The reversal of 2045573 is 3755402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1592644 + 452929 = 1262^2 + 673^2 .

It is a cyclic number.

It is not a de Polignac number, because 2045573 - 2² = 2045569 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2045503) 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, 35240 + ... + 35297.

It is an arithmetic number, because the mean of its divisors is an integer number (529035).

2^2045573 is an apocalyptic number.

It is an amenable number.

2045573 is a deficient number, since it is larger than the sum of its proper divisors (70567).

2045573 is an equidigital number, since it uses as much as digits as its factorization.

2045573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70566.

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 2045573 is about 1430.2352953273. The cubic root of 2045573 is about 126.9418999749.

The spelling of 2045573 in words is "two million, forty-five thousand, five hundred seventy-three".