252716987 has 8 divisors (see below), whose sum is σ = 255429936. Its totient is φ = 250010752.

The previous prime is 252716983. The next prime is 252716999. The reversal of 252716987 is 789617252.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 252716987 - 2² = 252716983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252716983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116303 + ... + 118455.

It is an arithmetic number, because the mean of its divisors is an integer number (31928742).

Almost surely, 2^252716987 is an apocalyptic number.

252716987 is a deficient number, since it is larger than the sum of its proper divisors (2712949).

252716987 is a wasteful number, since it uses less digits than its factorization.

252716987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3357.

The product of its digits is 423360, while the sum is 47.

The square root of 252716987 is about 15897.0747938103. The cubic root of 252716987 is about 632.2344332380.

The spelling of 252716987 in words is "two hundred fifty-two million, seven hundred sixteen thousand, nine hundred eighty-seven".