4251521322 has 72 divisors (see below), whose sum is σ = 9579604320. Its totient is φ = 1362446400.

The previous prime is 4251521269. The next prime is 4251521353. The reversal of 4251521322 is 2231251524.

4251521322 is a `hidden beast` number, since 425 + 1 + 5 + 213 + 22 = 666.

4251521322 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2147329 + ... + 2149307.

It is an arithmetic number, because the mean of its divisors is an integer number (133050060).

Almost surely, 2^4251521322 is an apocalyptic number.

4251521322 is an abundant number, since it is smaller than the sum of its proper divisors (5328082998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4251521322 is a wasteful number, since it uses less digits than its factorization.

4251521322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2140 (or 2096 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 4251521322 is about 65203.6910151565. The cubic root of 4251521322 is about 1619.9991518057. Note that the first 3 decimals are identical.

Adding to 4251521322 its reverse (2231251524), we get a palindrome (6482772846).

The spelling of 4251521322 in words is "four billion, two hundred fifty-one million, five hundred twenty-one thousand, three hundred twenty-two".