3525581 has 2 divisors, whose sum is σ = 3525582. Its totient is φ = 3525580.

The previous prime is 3525563. The next prime is 3525593. The reversal of 3525581 is 1855253.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2669956 + 855625 = 1634^2 + 925^2 .

It is an emirp because it is prime and its reverse (1855253) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3525581 is a prime.

It is a super-2 number, since 2×3525581² = 24859442775122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3525521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1762790 + 1762791.

It is an arithmetic number, because the mean of its divisors is an integer number (1762791).

Almost surely, 2^3525581 is an apocalyptic number.

It is an amenable number.

3525581 is a deficient number, since it is larger than the sum of its proper divisors (1).

3525581 is an equidigital number, since it uses as much as digits as its factorization.

3525581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6000, while the sum is 29.

The square root of 3525581 is about 1877.6530563445. The cubic root of 3525581 is about 152.1984509700.

The spelling of 3525581 in words is "three million, five hundred twenty-five thousand, five hundred eighty-one".