3005257 has 4 divisors (see below), whose sum is σ = 3010816. Its totient is φ = 2999700.

The previous prime is 3005237. The next prime is 3005267. The reversal of 3005257 is 7525003.

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 a cyclic number.

It is not a de Polignac number, because 3005257 - 2⁷ = 3005129 is a prime.

It is a Duffinian number.

3005257 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3005207) 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, 1869 + ... + 3082.

It is an arithmetic number, because the mean of its divisors is an integer number (752704).

Almost surely, 2^3005257 is an apocalyptic number.

It is an amenable number.

3005257 is a deficient number, since it is larger than the sum of its proper divisors (5559).

3005257 is an equidigital number, since it uses as much as digits as its factorization.

3005257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5558.

The product of its (nonzero) digits is 1050, while the sum is 22.

The square root of 3005257 is about 1733.5677085133. The cubic root of 3005257 is about 144.3091512710.

The spelling of 3005257 in words is "three million, five thousand, two hundred fifty-seven".