3245581 has 2 divisors, whose sum is σ = 3245582. Its totient is φ = 3245580.

The previous prime is 3245579. The next prime is 3245587. The reversal of 3245581 is 1855423.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2920681 + 324900 = 1709^2 + 570^2 .

It is an emirp because it is prime and its reverse (1855423) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3245581 - 2¹ = 3245579 is a prime.

It is a super-2 number, since 2×3245581² = 21067592055122, which contains 22 as substring.

Together with 3245579, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3245587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1622790 + 1622791.

It is an arithmetic number, because the mean of its divisors is an integer number (1622791).

Almost surely, 2^3245581 is an apocalyptic number.

It is an amenable number.

3245581 is a deficient number, since it is larger than the sum of its proper divisors (1).

3245581 is an equidigital number, since it uses as much as digits as its factorization.

3245581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4800, while the sum is 28.

The square root of 3245581 is about 1801.5496107518. The cubic root of 3245581 is about 148.0576382512.

The spelling of 3245581 in words is "three million, two hundred forty-five thousand, five hundred eighty-one".