3749521 has 8 divisors (see below), whose sum is σ = 3838464. Its totient is φ = 3661680.

The previous prime is 3749477. The next prime is 3749527. The reversal of 3749521 is 1259473.

3749521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3749521 - 2⁷ = 3749393 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3749527) 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 in 7 ways as a sum of consecutive naturals, for example, 12651 + ... + 12943.

It is an arithmetic number, because the mean of its divisors is an integer number (479808).

Almost surely, 2^3749521 is an apocalyptic number.

It is an amenable number.

3749521 is a deficient number, since it is larger than the sum of its proper divisors (88943).

3749521 is a wasteful number, since it uses less digits than its factorization.

3749521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551.

The product of its digits is 7560, while the sum is 31.

The square root of 3749521 is about 1936.3679918858. The cubic root of 3749521 is about 155.3550100633.

The spelling of 3749521 in words is "three million, seven hundred forty-nine thousand, five hundred twenty-one".