252866 has 4 divisors (see below), whose sum is σ = 379302. Its totient is φ = 126432.
The previous prime is 252829. The next prime is 252869. The reversal of 252866 is 668252.
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in only one way, i.e., 177241 + 75625 = 421^2 + 275^2 .
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 252866.
It is not an unprimeable number, because it can be changed into a prime (252869) by changing a digit.
252866 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63215 + ... + 63218.
2252866 is an apocalyptic number.
252866 is a deficient number, since it is larger than the sum of its proper divisors (126436).
252866 is a wasteful number, since it uses less digits than its factorization.
252866 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 126435.
The product of its digits is 5760, while the sum is 29.
The square root of 252866 is about 502.8578327917. The cubic root of 252866 is about 63.2358673190.
The spelling of 252866 in words is "two hundred fifty-two thousand, eight hundred sixty-six".
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