20315375 has 8 divisors (see below), whose sum is σ = 25353744. Its totient is φ = 16252200.

The previous prime is 20315369. The next prime is 20315387. The reversal of 20315375 is 57351302.

It is not a de Polignac number, because 20315375 - 2⁴ = 20315359 is a prime.

It is a super-2 number, since 2×20315375² = 825428922781250, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 81137 + ... + 81386.

It is an arithmetic number, because the mean of its divisors is an integer number (3169218).

Almost surely, 2^20315375 is an apocalyptic number.

20315375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20315375 is a deficient number, since it is larger than the sum of its proper divisors (5038369).

20315375 is an equidigital number, since it uses as much as digits as its factorization.

20315375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162538 (or 162528 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 26.

The square root of 20315375 is about 4507.2580356576. The cubic root of 20315375 is about 272.8610929971.

Adding to 20315375 its reverse (57351302), we get a palindrome (77666677).

The spelling of 20315375 in words is "twenty million, three hundred fifteen thousand, three hundred seventy-five".