3533561 has 2 divisors, whose sum is σ = 3533562. Its totient is φ = 3533560.

The previous prime is 3533557. The next prime is 3533573. The reversal of 3533561 is 1653353.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3400336 + 133225 = 1844^2 + 365^2 .

It is a cyclic number.

It is not a de Polignac number, because 3533561 - 2² = 3533557 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3533561.

It is not a weakly prime, because it can be changed into another prime (3533531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1766780 + 1766781.

It is an arithmetic number, because the mean of its divisors is an integer number (1766781).

Almost surely, 2^3533561 is an apocalyptic number.

It is an amenable number.

3533561 is a deficient number, since it is larger than the sum of its proper divisors (1).

3533561 is an equidigital number, since it uses as much as digits as its factorization.

3533561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4050, while the sum is 26.

The square root of 3533561 is about 1879.7768484583. The cubic root of 3533561 is about 152.3131959755.

The spelling of 3533561 in words is "three million, five hundred thirty-three thousand, five hundred sixty-one".