252507866 has 8 divisors (see below), whose sum is σ = 407897364. Its totient is φ = 116542080.

The previous prime is 252507821. The next prime is 252507881. The reversal of 252507866 is 668705252.

252507866 is digitally balanced in base 3, 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 2 ways, for example, as 228644641 + 23863225 = 15121^2 + 4885^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4855895 + ... + 4855946.

Almost surely, 2^252507866 is an apocalyptic number.

252507866 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

252507866 is a deficient number, since it is larger than the sum of its proper divisors (155389498).

252507866 is a wasteful number, since it uses less digits than its factorization.

252507866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9711856.

The product of its (nonzero) digits is 201600, while the sum is 41.

The square root of 252507866 is about 15890.4960904309. The cubic root of 252507866 is about 632.0599957065.

The spelling of 252507866 in words is "two hundred fifty-two million, five hundred seven thousand, eight hundred sixty-six".