14257805 has 4 divisors (see below), whose sum is σ = 17109372. Its totient is φ = 11406240.

The previous prime is 14257777. The next prime is 14257813. The reversal of 14257805 is 50875241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50875241 = 23 ⋅2211967.

It can be written as a sum of positive squares in 2 ways, for example, as 7606564 + 6651241 = 2758^2 + 2579^2 .

It is not a de Polignac number, because 14257805 - 2⁶ = 14257741 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 1425776 + ... + 1425785.

It is an arithmetic number, because the mean of its divisors is an integer number (4277343).

Almost surely, 2^14257805 is an apocalyptic number.

It is an amenable number.

14257805 is a deficient number, since it is larger than the sum of its proper divisors (2851567).

14257805 is an equidigital number, since it uses as much as digits as its factorization.

14257805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2851566.

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 14257805 is about 3775.9508736211. The cubic root of 14257805 is about 242.4846343047.

It can be divided in two parts, 1425780 and 5, that multiplied together give a square (7128900 = 2670²).

The spelling of 14257805 in words is "fourteen million, two hundred fifty-seven thousand, eight hundred five".