3252440021 has 4 divisors (see below), whose sum is σ = 3253503552. Its totient is φ = 3251376492.

The previous prime is 3252440003. The next prime is 3252440039. The reversal of 3252440021 is 1200442523.

It is a happy number.

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 (3252440003) and next prime (3252440039).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3252440021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3252440041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 527165 + ... + 533298.

It is an arithmetic number, because the mean of its divisors is an integer number (813375888).

Almost surely, 2^3252440021 is an apocalyptic number.

It is an amenable number.

3252440021 is a deficient number, since it is larger than the sum of its proper divisors (1063531).

3252440021 is a wasteful number, since it uses less digits than its factorization.

3252440021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063530.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 3252440021 is about 57030.1676395923. The cubic root of 3252440021 is about 1481.6186364789.

Adding to 3252440021 its reverse (1200442523), we get a palindrome (4452882544).

The spelling of 3252440021 in words is "three billion, two hundred fifty-two million, four hundred forty thousand, twenty-one".