20203253 has 8 divisors (see below), whose sum is σ = 23259072. Its totient is φ = 17189856.

The previous prime is 20203243. The next prime is 20203273. The reversal of 20203253 is 35230202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20203253 - 2⁴ = 20203237 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 (20203243) 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 7 ways as a sum of consecutive naturals, for example, 9575 + ... + 11492.

It is an arithmetic number, because the mean of its divisors is an integer number (2907384).

Almost surely, 2^20203253 is an apocalyptic number.

It is an amenable number.

20203253 is a deficient number, since it is larger than the sum of its proper divisors (3055819).

20203253 is a wasteful number, since it uses less digits than its factorization.

20203253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21211.

The product of its (nonzero) digits is 360, while the sum is 17.

The square root of 20203253 is about 4494.8028877805. The cubic root of 20203253 is about 272.3581867390.

Adding to 20203253 its reverse (35230202), we get a palindrome (55433455).

The spelling of 20203253 in words is "twenty million, two hundred three thousand, two hundred fifty-three".