3582521 has 2 divisors, whose sum is σ = 3582522. Its totient is φ = 3582520.

The previous prime is 3582499. The next prime is 3582547. The reversal of 3582521 is 1252853.

It is an a-pointer prime, because the next prime (3582547) can be obtained adding 3582521 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3367225 + 215296 = 1835^2 + 464^2 .

It is a cyclic number.

It is not a de Polignac number, because 3582521 - 2¹⁰ = 3581497 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (3581521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1791260 + 1791261.

It is an arithmetic number, because the mean of its divisors is an integer number (1791261).

Almost surely, 2^3582521 is an apocalyptic number.

It is an amenable number.

3582521 is a deficient number, since it is larger than the sum of its proper divisors (1).

3582521 is an equidigital number, since it uses as much as digits as its factorization.

3582521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2400, while the sum is 26.

The square root of 3582521 is about 1892.7548705524. The cubic root of 3582521 is about 153.0134409426.

The spelling of 3582521 in words is "three million, five hundred eighty-two thousand, five hundred twenty-one".