20093501 has 4 divisors (see below), whose sum is σ = 20393472. Its totient is φ = 19793532.

The previous prime is 20093483. The next prime is 20093509. The reversal of 20093501 is 10539002.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10539002 = 2 ⋅5269501.

It is a cyclic number.

It is not a de Polignac number, because 20093501 - 2¹⁰ = 20092477 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 (20093509) 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 3 ways as a sum of consecutive naturals, for example, 149885 + ... + 150018.

It is an arithmetic number, because the mean of its divisors is an integer number (5098368).

Almost surely, 2^20093501 is an apocalyptic number.

It is an amenable number.

20093501 is a deficient number, since it is larger than the sum of its proper divisors (299971).

20093501 is an equidigital number, since it uses as much as digits as its factorization.

20093501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299970.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 20093501 is about 4482.5774951472. The cubic root of 20093501 is about 271.8641054515.

The spelling of 20093501 in words is "twenty million, ninety-three thousand, five hundred one".