14155257 has 4 divisors (see below), whose sum is σ = 18873680. Its totient is φ = 9436836.

The previous prime is 14155249. The next prime is 14155279. The reversal of 14155257 is 75255141.

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.

It is not a de Polignac number, because 14155257 - 2³ = 14155249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14155217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2359207 + ... + 2359212.

It is an arithmetic number, because the mean of its divisors is an integer number (4718420).

Almost surely, 2^14155257 is an apocalyptic number.

It is an amenable number.

14155257 is a deficient number, since it is larger than the sum of its proper divisors (4718423).

14155257 is an equidigital number, since it uses as much as digits as its factorization.

14155257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4718422.

The product of its digits is 7000, while the sum is 30.

The square root of 14155257 is about 3762.3472726478. The cubic root of 14155257 is about 241.9018851860.

The spelling of 14155257 in words is "fourteen million, one hundred fifty-five thousand, two hundred fifty-seven".