20116253 has 8 divisors (see below), whose sum is σ = 21438072. Its totient is φ = 18809856.

The previous prime is 20116249. The next prime is 20116279. The reversal of 20116253 is 35261102.

It can be written as a sum of positive squares in 4 ways, for example, as 3034564 + 17081689 = 1742^2 + 4133^2 .

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

It is not a de Polignac number, because 20116253 - 2² = 20116249 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 (20116853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1100 + ... + 6437.

It is an arithmetic number, because the mean of its divisors is an integer number (2679759).

Almost surely, 2^20116253 is an apocalyptic number.

It is an amenable number.

20116253 is a deficient number, since it is larger than the sum of its proper divisors (1321819).

20116253 is a wasteful number, since it uses less digits than its factorization.

20116253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7711.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 20116253 is about 4485.1146027722. The cubic root of 20116253 is about 271.9666779032.

Adding to 20116253 its reverse (35261102), we get a palindrome (55377355).

The spelling of 20116253 in words is "twenty million, one hundred sixteen thousand, two hundred fifty-three".