3744521 has 16 divisors (see below), whose sum is σ = 4300800. Its totient is φ = 3229200.

The previous prime is 3744493. The next prime is 3744523. The reversal of 3744521 is 1254473.

It is a cyclic number.

It is not a de Polignac number, because 3744521 - 2¹⁰ = 3743497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3744523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26870 + ... + 27008.

It is an arithmetic number, because the mean of its divisors is an integer number (268800).

Almost surely, 2^3744521 is an apocalyptic number.

3744521 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3744521 is a deficient number, since it is larger than the sum of its proper divisors (556279).

3744521 is a wasteful number, since it uses less digits than its factorization.

3744521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260.

The product of its digits is 3360, while the sum is 26.

The square root of 3744521 is about 1935.0764842765. The cubic root of 3744521 is about 155.2859238534.

Adding to 3744521 its reverse (1254473), we get a palindrome (4998994).

The spelling of 3744521 in words is "three million, seven hundred forty-four thousand, five hundred twenty-one".