3721559 has 2 divisors, whose sum is σ = 3721560. Its totient is φ = 3721558.

The previous prime is 3721537. The next prime is 3721583. The reversal of 3721559 is 9551273.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3721559 - 2⁸ = 3721303 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3721259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1860779 + 1860780.

It is an arithmetic number, because the mean of its divisors is an integer number (1860780).

Almost surely, 2^3721559 is an apocalyptic number.

3721559 is a deficient number, since it is larger than the sum of its proper divisors (1).

3721559 is an equidigital number, since it uses as much as digits as its factorization.

3721559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9450, while the sum is 32.

The square root of 3721559 is about 1929.1342617869. The cubic root of 3721559 is about 154.9678601415.

The spelling of 3721559 in words is "three million, seven hundred twenty-one thousand, five hundred fifty-nine".