18052297 has 4 divisors (see below), whose sum is σ = 18674820. Its totient is φ = 17429776.

The previous prime is 18052273. The next prime is 18052313. The reversal of 18052297 is 79225081.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12595401 + 5456896 = 3549^2 + 2336^2 .

It is a cyclic number.

It is not a de Polignac number, because 18052297 - 2⁷ = 18052169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18052267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 311218 + ... + 311275.

It is an arithmetic number, because the mean of its divisors is an integer number (4668705).

Almost surely, 2^18052297 is an apocalyptic number.

It is an amenable number.

18052297 is a deficient number, since it is larger than the sum of its proper divisors (622523).

18052297 is an equidigital number, since it uses as much as digits as its factorization.

18052297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622522.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 18052297 is about 4248.7994774995. The cubic root of 18052297 is about 262.3277031097.

The spelling of 18052297 in words is "eighteen million, fifty-two thousand, two hundred ninety-seven".