3085257 has 8 divisors (see below), whose sum is σ = 4701376. Its totient is φ = 1762992.

The previous prime is 3085237. The next prime is 3085259. The reversal of 3085257 is 7525803.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3085257 - 2⁷ = 3085129 is a prime.

It is a Duffinian number.

3085257 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3085259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73438 + ... + 73479.

It is an arithmetic number, because the mean of its divisors is an integer number (587672).

Almost surely, 2^3085257 is an apocalyptic number.

It is an amenable number.

3085257 is a deficient number, since it is larger than the sum of its proper divisors (1616119).

3085257 is a wasteful number, since it uses less digits than its factorization.

3085257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146927.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 3085257 is about 1756.4899658125. The cubic root of 3085257 is about 145.5784581754.

It can be divided in two parts, 308 and 5257, that added together give a triangular number (5565 = T₁₀₅).

The spelling of 3085257 in words is "three million, eighty-five thousand, two hundred fifty-seven".