252113450917 has 4 divisors (see below), whose sum is σ = 260807018220. Its totient is φ = 243419883616.

The previous prime is 252113450899. The next prime is 252113450923. The reversal of 252113450917 is 719054311252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 144362762401 + 107750688516 = 379951^2 + 328254^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252113450917 is a prime.

It is a super-2 number, since 2×252113450917² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 252113450917.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252113450987) 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, 4346783608 + ... + 4346783665.

It is an arithmetic number, because the mean of its divisors is an integer number (65201754555).

Almost surely, 2^252113450917 is an apocalyptic number.

It is an amenable number.

252113450917 is a deficient number, since it is larger than the sum of its proper divisors (8693567303).

252113450917 is an equidigital number, since it uses as much as digits as its factorization.

252113450917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8693567302.

The product of its (nonzero) digits is 75600, while the sum is 40.

The spelling of 252113450917 in words is "two hundred fifty-two billion, one hundred thirteen million, four hundred fifty thousand, nine hundred seventeen".