4052231521 has 4 divisors (see below), whose sum is σ = 4363941652. Its totient is φ = 3740521392.

The previous prime is 4052231467. The next prime is 4052231539. The reversal of 4052231521 is 1251322504.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1262807296 + 2789424225 = 35536^2 + 52815^2 .

It is a cyclic number.

It is not a de Polignac number, because 4052231521 - 2²⁷ = 3918013793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4052231581) 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 3 ways as a sum of consecutive naturals, for example, 155855046 + ... + 155855071.

It is an arithmetic number, because the mean of its divisors is an integer number (1090985413).

Almost surely, 2^4052231521 is an apocalyptic number.

It is an amenable number.

4052231521 is a deficient number, since it is larger than the sum of its proper divisors (311710131).

4052231521 is a wasteful number, since it uses less digits than its factorization.

4052231521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311710130.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 4052231521 is about 63657.1403771800. The cubic root of 4052231521 is about 1594.2805586523.

The spelling of 4052231521 in words is "four billion, fifty-two million, two hundred thirty-one thousand, five hundred twenty-one".