14207257 has 4 divisors (see below), whose sum is σ = 15042996. Its totient is φ = 13371520.

The previous prime is 14207239. The next prime is 14207267. The reversal of 14207257 is 75270241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75270241 = 211 ⋅356731.

It can be written as a sum of positive squares in 2 ways, for example, as 4447881 + 9759376 = 2109^2 + 3124^2 .

It is not a de Polignac number, because 14207257 - 2¹¹ = 14205209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14207227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417844 + ... + 417877.

It is an arithmetic number, because the mean of its divisors is an integer number (3760749).

Almost surely, 2^14207257 is an apocalyptic number.

14207257 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

14207257 is a deficient number, since it is larger than the sum of its proper divisors (835739).

14207257 is an equidigital number, since it uses as much as digits as its factorization.

14207257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835738.

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 14207257 is about 3769.2515172113. The cubic root of 14207257 is about 242.1977358449.

Adding to 14207257 its reverse (75270241), we get a palindrome (89477498).

It can be divided in two parts, 142072 and 57, that added together give a square (142129 = 377²).

The spelling of 14207257 in words is "fourteen million, two hundred seven thousand, two hundred fifty-seven".