3257015345 has 4 divisors (see below), whose sum is σ = 3908418420. Its totient is φ = 2605612272.

The previous prime is 3257015339. The next prime is 3257015347. The reversal of 3257015345 is 5435107523.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5435107523 = 419 ⋅12971617.

It can be written as a sum of positive squares in 2 ways, for example, as 582160384 + 2674854961 = 24128^2 + 51719^2 .

It is a cyclic number.

It is not a de Polignac number, because 3257015345 - 2⁸ = 3257015089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3257015347) 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, 325701530 + ... + 325701539.

It is an arithmetic number, because the mean of its divisors is an integer number (977104605).

Almost surely, 2^3257015345 is an apocalyptic number.

It is an amenable number.

3257015345 is a deficient number, since it is larger than the sum of its proper divisors (651403075).

3257015345 is an equidigital number, since it uses as much as digits as its factorization.

3257015345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651403074.

The product of its (nonzero) digits is 63000, while the sum is 35.

The square root of 3257015345 is about 57070.2667332123. The cubic root of 3257015345 is about 1482.3130596447.

The spelling of 3257015345 in words is "three billion, two hundred fifty-seven million, fifteen thousand, three hundred forty-five".