3565531 has 2 divisors, whose sum is σ = 3565532. Its totient is φ = 3565530.

The previous prime is 3565487. The next prime is 3565537. The reversal of 3565531 is 1355653.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3565531 - 2¹³ = 3557339 is a prime.

It is a super-2 number, since 2×3565531² = 25426022623922, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3565531.

It is not a weakly prime, because it can be changed into another prime (3565537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1782765 + 1782766.

It is an arithmetic number, because the mean of its divisors is an integer number (1782766).

Almost surely, 2^3565531 is an apocalyptic number.

3565531 is a deficient number, since it is larger than the sum of its proper divisors (1).

3565531 is an equidigital number, since it uses as much as digits as its factorization.

3565531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6750, while the sum is 28.

The square root of 3565531 is about 1888.2613696202. The cubic root of 3565531 is about 152.7711703099.

It can be divided in two parts, 3565 and 531, that added together give a 12-th power (4096 = 2¹²).

The spelling of 3565531 in words is "three million, five hundred sixty-five thousand, five hundred thirty-one".