14402257 has 4 divisors (see below), whose sum is σ = 14708736. Its totient is φ = 14095780.

The previous prime is 14402249. The next prime is 14402317. The reversal of 14402257 is 75220441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75220441 = 73 ⋅1030417.

It is a cyclic number.

It is not a de Polignac number, because 14402257 - 2³ = 14402249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14402237) 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, 153169 + ... + 153262.

It is an arithmetic number, because the mean of its divisors is an integer number (3677184).

Almost surely, 2^14402257 is an apocalyptic number.

It is an amenable number.

14402257 is a deficient number, since it is larger than the sum of its proper divisors (306479).

14402257 is an equidigital number, since it uses as much as digits as its factorization.

14402257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306478.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 14402257 is about 3795.0305664118. The cubic root of 14402257 is about 243.3007898348.

Adding to 14402257 its reverse (75220441), we get a palindrome (89622698).

The spelling of 14402257 in words is "fourteen million, four hundred two thousand, two hundred fifty-seven".