20117375 has 16 divisors (see below), whose sum is σ = 26586144. Its totient is φ = 15145600.

The previous prime is 20117359. The next prime is 20117401. The reversal of 20117375 is 57371102.

It is not a de Polignac number, because 20117375 - 2⁴ = 20117359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2609 + ... + 6858.

It is an arithmetic number, because the mean of its divisors is an integer number (1661634).

Almost surely, 2^20117375 is an apocalyptic number.

20117375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20117375 is a deficient number, since it is larger than the sum of its proper divisors (6468769).

20117375 is an equidigital number, since it uses as much as digits as its factorization.

20117375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9499 (or 9489 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 20117375 is about 4485.2396814440. The cubic root of 20117375 is about 271.9717341951.

Adding to 20117375 its reverse (57371102), we get a palindrome (77488477).

It can be divided in two parts, 201 and 17375, that added together give a cube (17576 = 26³).

The spelling of 20117375 in words is "twenty million, one hundred seventeen thousand, three hundred seventy-five".