3552521 has 4 divisors (see below), whose sum is σ = 4060032. Its totient is φ = 3045012.

The previous prime is 3552517. The next prime is 3552533. The reversal of 3552521 is 1252553.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1252553 = 83 ⋅15091.

It is a cyclic number.

It is not a de Polignac number, because 3552521 - 2² = 3552517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3552421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253745 + ... + 253758.

It is an arithmetic number, because the mean of its divisors is an integer number (1015008).

Almost surely, 2^3552521 is an apocalyptic number.

It is an amenable number.

3552521 is a deficient number, since it is larger than the sum of its proper divisors (507511).

3552521 is an equidigital number, since it uses as much as digits as its factorization.

3552521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507510.

The product of its digits is 1500, while the sum is 23.

The square root of 3552521 is about 1884.8132533490. The cubic root of 3552521 is about 152.5851320780.

Subtracting from 3552521 its reverse (1252553), we obtain a cube (2299968 = 132³).

The spelling of 3552521 in words is "three million, five hundred fifty-two thousand, five hundred twenty-one".