203452455253 has 4 divisors (see below), whose sum is σ = 204474829600. Its totient is φ = 202430080908.

The previous prime is 203452455251. The next prime is 203452455289. The reversal of 203452455253 is 352554254302.

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 203452455253 - 2¹ = 203452455251 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 (203452455251) 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, 511186875 + ... + 511187272.

It is an arithmetic number, because the mean of its divisors is an integer number (51118707400).

Almost surely, 2^203452455253 is an apocalyptic number.

It is an amenable number.

203452455253 is a deficient number, since it is larger than the sum of its proper divisors (1022374347).

203452455253 is a wasteful number, since it uses less digits than its factorization.

203452455253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022374346.

The product of its (nonzero) digits is 720000, while the sum is 40.

The spelling of 203452455253 in words is "two hundred three billion, four hundred fifty-two million, four hundred fifty-five thousand, two hundred fifty-three".