250501 has 2 divisors, whose sum is σ = 250502. Its totient is φ = 250500.

The previous prime is 250499. The next prime is 250543. The reversal of 250501 is 105052.

250501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 245025 + 5476 = 495^2 + 74^2 .

It is a cyclic number.

It is not a de Polignac number, because 250501 - 2¹ = 250499 is a prime.

Together with 250499, it forms a pair of twin primes.

It is an alternating number because its digits alternate between even and odd.

It is the 501-st Hogben number.

250501 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (250301) by changing a digit.

It is a nontrivial repunit in base 500.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125250 + 125251.

It is an arithmetic number, because the mean of its divisors is an integer number (125251).

2²⁵⁰⁵⁰¹ is an apocalyptic number.

It is an amenable number.

250501 is a deficient number, since it is larger than the sum of its proper divisors (1).

250501 is an equidigital number, since it uses as much as digits as its factorization.

250501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50, while the sum is 13.

The square root of 250501 is about 500.5007492502. The cubic root of 250501 is about 63.0381057787.

Adding to 250501 its reverse (105052), we get a palindrome (355553).

It can be divided in two parts, 250 and 501, that multiplied together give a triangular number (125250 = T₅₀₀).

The spelling of 250501 in words is "two hundred fifty thousand, five hundred one".