3561539 has 2 divisors, whose sum is σ = 3561540. Its totient is φ = 3561538.

The previous prime is 3561529. The next prime is 3561541. The reversal of 3561539 is 9351653.

It is a strong prime.

It is an emirp because it is prime and its reverse (9351653) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3561539 is a prime.

Together with 3561541, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3561529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1780769 + 1780770.

It is an arithmetic number, because the mean of its divisors is an integer number (1780770).

Almost surely, 2^3561539 is an apocalyptic number.

3561539 is a deficient number, since it is larger than the sum of its proper divisors (1).

3561539 is an equidigital number, since it uses as much as digits as its factorization.

3561539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12150, while the sum is 32.

The square root of 3561539 is about 1887.2040165282. The cubic root of 3561539 is about 152.7141343681.

The spelling of 3561539 in words is "three million, five hundred sixty-one thousand, five hundred thirty-nine".