14780257 has 4 divisors (see below), whose sum is σ = 14799040. Its totient is φ = 14761476.

The previous prime is 14780251. The next prime is 14780263. The reversal of 14780257 is 75208741.

It is a happy number.

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: 75208741 = 101 ⋅744641.

It is an interprime number because it is at equal distance from previous prime (14780251) and next prime (14780263).

It is a cyclic number.

It is not a de Polignac number, because 14780257 - 2¹¹ = 14778209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14780251) 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, 8157 + ... + 9802.

It is an arithmetic number, because the mean of its divisors is an integer number (3699760).

Almost surely, 2^14780257 is an apocalyptic number.

It is an amenable number.

14780257 is a deficient number, since it is larger than the sum of its proper divisors (18783).

14780257 is an equidigital number, since it uses as much as digits as its factorization.

14780257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18782.

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 14780257 is about 3844.5099817792. The cubic root of 14780257 is about 245.4109831118.

Adding to 14780257 its reverse (75208741), we get a palindrome (89988998).

The spelling of 14780257 in words is "fourteen million, seven hundred eighty thousand, two hundred fifty-seven".