252316015521 has 16 divisors (see below), whose sum is σ = 339597952704. Its totient is φ = 166622678784.

The previous prime is 252316015513. The next prime is 252316015531. The reversal of 252316015521 is 125510613252.

It is not a de Polignac number, because 252316015521 - 2³ = 252316015513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (252316015531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3998205 + ... + 4060821.

It is an arithmetic number, because the mean of its divisors is an integer number (21224872044).

Almost surely, 2^252316015521 is an apocalyptic number.

It is an amenable number.

252316015521 is a deficient number, since it is larger than the sum of its proper divisors (87281937183).

252316015521 is a wasteful number, since it uses less digits than its factorization.

252316015521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75280.

The product of its (nonzero) digits is 18000, while the sum is 33.

Adding to 252316015521 its reverse (125510613252), we get a palindrome (377826628773).

The spelling of 252316015521 in words is "two hundred fifty-two billion, three hundred sixteen million, fifteen thousand, five hundred twenty-one".