252707861 has 16 divisors (see below), whose sum is σ = 301830144. Its totient is φ = 207056304.

The previous prime is 252707849. The next prime is 252707867. The reversal of 252707861 is 168707252.

It is not a de Polignac number, because 252707861 - 2¹⁴ = 252691477 is a prime.

It is a super-2 number, since 2×252707861² = 127722526022390642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252707867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5216 + ... + 23078.

It is an arithmetic number, because the mean of its divisors is an integer number (18864384).

Almost surely, 2^252707861 is an apocalyptic number.

It is an amenable number.

252707861 is a deficient number, since it is larger than the sum of its proper divisors (49122283).

252707861 is a wasteful number, since it uses less digits than its factorization.

252707861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17960.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 252707861 is about 15896.7877572798. The cubic root of 252707861 is about 632.2268228264.

The spelling of 252707861 in words is "two hundred fifty-two million, seven hundred seven thousand, eight hundred sixty-one".