3252821 has 24 divisors (see below), whose sum is σ = 4087776. Its totient is φ = 2550240.

The previous prime is 3252787. The next prime is 3252827. The reversal of 3252821 is 1282523.

It is not a de Polignac number, because 3252821 - 2¹⁴ = 3236437 is a prime.

It is a Smith number, since the sum of its digits (23) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3252827) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75626 + ... + 75668.

It is an arithmetic number, because the mean of its divisors is an integer number (170324).

Almost surely, 2^3252821 is an apocalyptic number.

It is an amenable number.

3252821 is a deficient number, since it is larger than the sum of its proper divisors (834955).

3252821 is a wasteful number, since it uses less digits than its factorization.

3252821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113 (or 90 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 3252821 is about 1803.5578726506. The cubic root of 3252821 is about 148.1676484694.

The spelling of 3252821 in words is "three million, two hundred fifty-two thousand, eight hundred twenty-one".