20003253 has 8 divisors (see below), whose sum is σ = 26696928. Its totient is φ = 13322544.

The previous prime is 20003231. The next prime is 20003267. The reversal of 20003253 is 35230002.

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

It is not a de Polignac number, because 20003253 - 2¹³ = 19995061 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20003293) 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, 1251 + ... + 6447.

It is an arithmetic number, because the mean of its divisors is an integer number (3337116).

Almost surely, 2^20003253 is an apocalyptic number.

It is an amenable number.

20003253 is a deficient number, since it is larger than the sum of its proper divisors (6693675).

20003253 is a wasteful number, since it uses less digits than its factorization.

20003253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6483.

The product of its (nonzero) digits is 180, while the sum is 15.

The square root of 20003253 is about 4472.4996366685. The cubic root of 20003253 is about 271.4564775292.

Adding to 20003253 its reverse (35230002), we get a palindrome (55233255).

It can be divided in two parts, 2000 and 3253, that added together give a triangular number (5253 = T₁₀₂).

The spelling of 20003253 in words is "twenty million, three thousand, two hundred fifty-three".