203450045 has 4 divisors (see below), whose sum is σ = 244140060. Its totient is φ = 162760032.

The previous prime is 203450041. The next prime is 203450099. The reversal of 203450045 is 540054302.

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 66161956 + 137288089 = 8134^2 + 11717^2 .

It is a cyclic number.

It is not a de Polignac number, because 203450045 - 2² = 203450041 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 203450045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203450041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20345000 + ... + 20345009.

It is an arithmetic number, because the mean of its divisors is an integer number (61035015).

Almost surely, 2^203450045 is an apocalyptic number.

It is an amenable number.

203450045 is a deficient number, since it is larger than the sum of its proper divisors (40690015).

203450045 is an equidigital number, since it uses as much as digits as its factorization.

203450045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40690014.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 203450045 is about 14263.5915883763. The cubic root of 203450045 is about 588.1470595273.

The spelling of 203450045 in words is "two hundred three million, four hundred fifty thousand, forty-five".