252060721 has 32 divisors (see below), whose sum is σ = 298598400. Its totient is φ = 210504000.

The previous prime is 252060701. The next prime is 252060733. The reversal of 252060721 is 127060252.

It is a cyclic number.

It is not a de Polignac number, because 252060721 - 2¹¹ = 252058673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252060701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 701940 + ... + 702298.

It is an arithmetic number, because the mean of its divisors is an integer number (9331200).

Almost surely, 2^252060721 is an apocalyptic number.

It is an amenable number.

252060721 is a deficient number, since it is larger than the sum of its proper divisors (46537679).

252060721 is a wasteful number, since it uses less digits than its factorization.

252060721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 252060721 is about 15876.4202829227. The cubic root of 252060721 is about 631.6866879231.

The spelling of 252060721 in words is "two hundred fifty-two million, sixty thousand, seven hundred twenty-one".