250913 has 4 divisors (see below), whose sum is σ = 270228. Its totient is φ = 231600.

The previous prime is 250889. The next prime is 250919. The reversal of 250913 is 319052.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 85264 + 165649 = 292^2 + 407^2 .

It is a cyclic number.

It is not a de Polignac number, because 250913 - 2¹² = 246817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (250919) 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, 9638 + ... + 9663.

It is an arithmetic number, because the mean of its divisors is an integer number (67557).

2²⁵⁰⁹¹³ is an apocalyptic number.

It is an amenable number.

250913 is a deficient number, since it is larger than the sum of its proper divisors (19315).

250913 is a wasteful number, since it uses less digits than its factorization.

250913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19314.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 250913 is about 500.9121679496. The cubic root of 250913 is about 63.0726465244.

Adding to 250913 its reverse (319052), we get a palindrome (569965).

The spelling of 250913 in words is "two hundred fifty thousand, nine hundred thirteen".