3755521 has 32 divisors (see below), whose sum is σ = 5253120. Its totient is φ = 2592000.

The previous prime is 3755513. The next prime is 3755539. The reversal of 3755521 is 1255573.

It is a 3-Lehmer number, since φ(3755521) divides (3755521-1)³.

It is a cyclic number.

It is not a de Polignac number, because 3755521 - 2³ = 3755513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3755521.

It is not an unprimeable number, because it can be changed into a prime (3755561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24796 + ... + 24946.

It is an arithmetic number, because the mean of its divisors is an integer number (164160).

It is a Poulet number, since it divides 2^3755520-1.

Almost surely, 2^3755521 is an apocalyptic number.

It is an amenable number.

3755521 is a deficient number, since it is larger than the sum of its proper divisors (1497599).

3755521 is a wasteful number, since it uses less digits than its factorization.

3755521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205.

The product of its digits is 5250, while the sum is 28.

The square root of 3755521 is about 1937.9166648749. The cubic root of 3755521 is about 155.4378324916.

The spelling of 3755521 in words is "three million, seven hundred fifty-five thousand, five hundred twenty-one".