203253145 has 16 divisors (see below), whose sum is σ = 253808640. Its totient is φ = 156130624.

The previous prime is 203253091. The next prime is 203253151. The reversal of 203253145 is 541352302.

203253145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 203253145 - 2¹⁵ = 203220377 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4296 + ... + 20614.

It is an arithmetic number, because the mean of its divisors is an integer number (15863040).

Almost surely, 2^203253145 is an apocalyptic number.

It is an amenable number.

203253145 is a deficient number, since it is larger than the sum of its proper divisors (50555495).

203253145 is a wasteful number, since it uses less digits than its factorization.

203253145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16424.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 203253145 is about 14256.6877289222. The cubic root of 203253145 is about 587.9572610351.

The spelling of 203253145 in words is "two hundred three million, two hundred fifty-three thousand, one hundred forty-five".