252437687 has 4 divisors (see below), whose sum is σ = 252469896. Its totient is φ = 252405480.

The previous prime is 252437677. The next prime is 252437693. The reversal of 252437687 is 786734252.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 252437687 - 2¹⁶ = 252372151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252437677) by changing a digit.

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, 4112 + ... + 22842.

It is an arithmetic number, because the mean of its divisors is an integer number (63117474).

Almost surely, 2^252437687 is an apocalyptic number.

252437687 is a deficient number, since it is larger than the sum of its proper divisors (32209).

252437687 is a wasteful number, since it uses less digits than its factorization.

252437687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32208.

The product of its digits is 564480, while the sum is 44.

The square root of 252437687 is about 15888.2877302748. The cubic root of 252437687 is about 632.0014345625.

The spelling of 252437687 in words is "two hundred fifty-two million, four hundred thirty-seven thousand, six hundred eighty-seven".