14445257 has 4 divisors (see below), whose sum is σ = 15294996. Its totient is φ = 13595520.

The previous prime is 14445253. The next prime is 14445259. The reversal of 14445257 is 75254441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75254441 = 59 ⋅1275499.

It can be written as a sum of positive squares in 2 ways, for example, as 5707321 + 8737936 = 2389^2 + 2956^2 .

It is a cyclic number.

It is not a de Polignac number, because 14445257 - 2² = 14445253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14445251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 424844 + ... + 424877.

It is an arithmetic number, because the mean of its divisors is an integer number (3823749).

Almost surely, 2^14445257 is an apocalyptic number.

14445257 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

14445257 is a deficient number, since it is larger than the sum of its proper divisors (849739).

14445257 is an equidigital number, since it uses as much as digits as its factorization.

14445257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849738.

The product of its digits is 22400, while the sum is 32.

The square root of 14445257 is about 3800.6916475821. The cubic root of 14445257 is about 243.5426857018.

Adding to 14445257 its reverse (75254441), we get a palindrome (89699698).

The spelling of 14445257 in words is "fourteen million, four hundred forty-five thousand, two hundred fifty-seven".