250513 has 4 divisors (see below), whose sum is σ = 254320. Its totient is φ = 246708.

The previous prime is 250501. The next prime is 250543. The reversal of 250513 is 315052.

250513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-250513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (250543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1803 + ... + 1936.

It is an arithmetic number, because the mean of its divisors is an integer number (63580).

2²⁵⁰⁵¹³ is an apocalyptic number.

It is an amenable number.

250513 is a deficient number, since it is larger than the sum of its proper divisors (3807).

250513 is an equidigital number, since it uses as much as digits as its factorization.

250513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3806.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 250513 is about 500.5127371007. The cubic root of 250513 is about 63.0391123551.

Adding to 250513 its reverse (315052), we get a palindrome (565565).

The spelling of 250513 in words is "two hundred fifty thousand, five hundred thirteen".