3256513 has 4 divisors (see below), whose sum is σ = 3507028. Its totient is φ = 3006000.

The previous prime is 3256499. The next prime is 3256523. The reversal of 3256513 is 3156523.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3156523 = 1709 ⋅1847.

It can be written as a sum of positive squares in 2 ways, for example, as 1787569 + 1468944 = 1337^2 + 1212^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3256513 is a prime.

It is a Duffinian number.

3256513 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3256523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125238 + ... + 125263.

It is an arithmetic number, because the mean of its divisors is an integer number (876757).

Almost surely, 2^3256513 is an apocalyptic number.

It is an amenable number.

3256513 is a deficient number, since it is larger than the sum of its proper divisors (250515).

3256513 is a wasteful number, since it uses less digits than its factorization.

3256513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250514.

The product of its digits is 2700, while the sum is 25.

The square root of 3256513 is about 1804.5811148297. The cubic root of 3256513 is about 148.2236847657.

The spelling of 3256513 in words is "three million, two hundred fifty-six thousand, five hundred thirteen".