20093503 has 4 divisors (see below), whose sum is σ = 20114928. Its totient is φ = 20072080.

The previous prime is 20093483. The next prime is 20093509. The reversal of 20093503 is 30539002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20093503 - 2⁵ = 20093471 is a prime.

It is a super-2 number, since 2×20093503² = 807497725622018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20093509) 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, 9238 + ... + 11203.

It is an arithmetic number, because the mean of its divisors is an integer number (5028732).

Almost surely, 2^20093503 is an apocalyptic number.

20093503 is a deficient number, since it is larger than the sum of its proper divisors (21425).

20093503 is an equidigital number, since it uses as much as digits as its factorization.

20093503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21424.

The product of its (nonzero) digits is 810, while the sum is 22.

The square root of 20093503 is about 4482.5777182331. The cubic root of 20093503 is about 271.8641144715.

The spelling of 20093503 in words is "twenty million, ninety-three thousand, five hundred three".