252521772 has 12 divisors (see below), whose sum is σ = 589217496. Its totient is φ = 84173920.

The previous prime is 252521771. The next prime is 252521777. The reversal of 252521772 is 277125252.

252521772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (252521771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10521729 + ... + 10521752.

It is an arithmetic number, because the mean of its divisors is an integer number (49101458).

Almost surely, 2^252521772 is an apocalyptic number.

It is an amenable number.

252521772 is an abundant number, since it is smaller than the sum of its proper divisors (336695724).

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

252521772 is a wasteful number, since it uses less digits than its factorization.

252521772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21043488 (or 21043486 counting only the distinct ones).

The product of its digits is 19600, while the sum is 33.

The square root of 252521772 is about 15890.9336415454. The cubic root of 252521772 is about 632.0715983350.

The spelling of 252521772 in words is "two hundred fifty-two million, five hundred twenty-one thousand, seven hundred seventy-two".