3255021 has 54 divisors (see below), whose sum is σ = 6110286. Its totient is φ = 1663200.

The previous prime is 3254959. The next prime is 3255059. The reversal of 3255021 is 1205523.

Added to its reverse (1205523) it gives a square (4460544 = 2112²).

3255021 = 99² + 100² + ... + 220².

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1920996 + 1334025 = 1386^2 + 1155^2 .

It is not a de Polignac number, because 3255021 - 2⁷ = 3254893 is a prime.

3255021 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3254985 and 3255003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3255071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 53331 + ... + 53391.

Almost surely, 2^3255021 is an apocalyptic number.

It is an amenable number.

3255021 is a deficient number, since it is larger than the sum of its proper divisors (2855265).

3255021 is a wasteful number, since it uses less digits than its factorization.

3255021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103 (or 82 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 3255021 is about 1804.1676751344. The cubic root of 3255021 is about 148.2010446473.

Adding to 3255021 its reverse (1205523), we get a square (4460544 = 2112²).

The spelling of 3255021 in words is "three million, two hundred fifty-five thousand, twenty-one".