252107305 has 8 divisors (see below), whose sum is σ = 303387912. Its totient is φ = 201113088.

The previous prime is 252107281. The next prime is 252107311. The reversal of 252107305 is 503701252.

252107305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 5837056 + 246270249 = 2416^2 + 15693^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252107305 is a prime.

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 252107305.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69654 + ... + 73183.

It is an arithmetic number, because the mean of its divisors is an integer number (37923489).

Almost surely, 2^252107305 is an apocalyptic number.

It is an amenable number.

252107305 is a deficient number, since it is larger than the sum of its proper divisors (51280607).

252107305 is a wasteful number, since it uses less digits than its factorization.

252107305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143195.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 252107305 is about 15877.8872964888. The cubic root of 252107305 is about 631.7256000814.

Adding to 252107305 its reverse (503701252), we get a palindrome (755808557).

The spelling of 252107305 in words is "two hundred fifty-two million, one hundred seven thousand, three hundred five".