2203145573 has 4 divisors (see below), whose sum is σ = 2279116140. Its totient is φ = 2127175008.

The previous prime is 2203145557. The next prime is 2203145591. The reversal of 2203145573 is 3755413022.

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 1666435684 + 536709889 = 40822^2 + 23167^2 .

It is a cyclic number.

It is not a de Polignac number, because 2203145573 - 2⁴ = 2203145557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2203145173) 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, 37985240 + ... + 37985297.

It is an arithmetic number, because the mean of its divisors is an integer number (569779035).

Almost surely, 2^2203145573 is an apocalyptic number.

It is an amenable number.

2203145573 is a deficient number, since it is larger than the sum of its proper divisors (75970567).

2203145573 is an equidigital number, since it uses as much as digits as its factorization.

2203145573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75970566.

The product of its (nonzero) digits is 25200, while the sum is 32.

The square root of 2203145573 is about 46937.6775416083. The cubic root of 2203145573 is about 1301.2110161026.

Adding to 2203145573 its reverse (3755413022), we get a palindrome (5958558595).

The spelling of 2203145573 in words is "two billion, two hundred three million, one hundred forty-five thousand, five hundred seventy-three".