20097253 has 18 divisors (see below), whose sum is σ = 23031078. Its totient is φ = 17511120.

The previous prime is 20097241. The next prime is 20097263. The reversal of 20097253 is 35279002.

It can be written as a sum of positive squares in only one way, i.e., 19554084 + 543169 = 4422^2 + 737^2 .

It is not a de Polignac number, because 20097253 - 2⁵ = 20097221 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 (20097223) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 299926 + ... + 299992.

Almost surely, 2^20097253 is an apocalyptic number.

It is an amenable number.

20097253 is a deficient number, since it is larger than the sum of its proper divisors (2933825).

20097253 is an equidigital number, since it uses as much as digits as its factorization.

20097253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 20097253 is about 4482.9959848298. The cubic root of 20097253 is about 271.8810258584.

The spelling of 20097253 in words is "twenty million, ninety-seven thousand, two hundred fifty-three".