3729521 has 2 divisors, whose sum is σ = 3729522. Its totient is φ = 3729520.

The previous prime is 3729503. The next prime is 3729533. The reversal of 3729521 is 1259273.

3729521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3474496 + 255025 = 1864^2 + 505^2 .

It is a cyclic number.

It is not a de Polignac number, because 3729521 - 2⁶ = 3729457 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3729541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1864760 + 1864761.

It is an arithmetic number, because the mean of its divisors is an integer number (1864761).

Almost surely, 2^3729521 is an apocalyptic number.

It is an amenable number.

3729521 is a deficient number, since it is larger than the sum of its proper divisors (1).

3729521 is an equidigital number, since it uses as much as digits as its factorization.

3729521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3780, while the sum is 29.

The square root of 3729521 is about 1931.1967792020. The cubic root of 3729521 is about 155.0782955114.

The spelling of 3729521 in words is "three million, seven hundred twenty-nine thousand, five hundred twenty-one".