3235521 has 4 divisors (see below), whose sum is σ = 4314032. Its totient is φ = 2157012.

The previous prime is 3235499. The next prime is 3235543. The reversal of 3235521 is 1255323.

3235521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is an interprime number because it is at equal distance from previous prime (3235499) and next prime (3235543).

It is not a de Polignac number, because 3235521 - 2⁵ = 3235489 is a prime.

It is a super-2 number, since 2×3235521² = 20937192282882, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

3235521 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3235591) 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 3 ways as a sum of consecutive naturals, for example, 539251 + ... + 539256.

It is an arithmetic number, because the mean of its divisors is an integer number (1078508).

Almost surely, 2^3235521 is an apocalyptic number.

It is an amenable number.

3235521 is a deficient number, since it is larger than the sum of its proper divisors (1078511).

3235521 is a wasteful number, since it uses less digits than its factorization.

3235521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078510.

The product of its digits is 900, while the sum is 21.

The square root of 3235521 is about 1798.7554030496. The cubic root of 3235521 is about 147.9045068185.

It can be divided in two parts, 32 and 35521, that added together give a palindrome (35553).

The spelling of 3235521 in words is "three million, two hundred thirty-five thousand, five hundred twenty-one".