252581530 has 16 divisors (see below), whose sum is σ = 457189920. Its totient is φ = 100467472.

The previous prime is 252581519. The next prime is 252581531. The reversal of 252581530 is 35185252.

252581530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 252581492 and 252581501.

It is not an unprimeable number, because it can be changed into a prime (252581531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68764 + ... + 72343.

It is an arithmetic number, because the mean of its divisors is an integer number (28574370).

Almost surely, 2^252581530 is an apocalyptic number.

252581530 is a deficient number, since it is larger than the sum of its proper divisors (204608390).

252581530 is a wasteful number, since it uses less digits than its factorization.

252581530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141293.

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 252581530 is about 15892.8137848526. The cubic root of 252581530 is about 632.1214532514.

The spelling of 252581530 in words is "two hundred fifty-two million, five hundred eighty-one thousand, five hundred thirty".