251941 has 2 divisors, whose sum is σ = 251942. Its totient is φ = 251940.

The previous prime is 251939. The next prime is 251947. The reversal of 251941 is 149152.

251941 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., 229441 + 22500 = 479^2 + 150^2 .

It is a cyclic number.

It is not a de Polignac number, because 251941 - 2¹ = 251939 is a prime.

Together with 251939, it forms a pair of twin primes.

It is a nialpdrome in base 6.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (251947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125970 + 125971.

It is an arithmetic number, because the mean of its divisors is an integer number (125971).

2²⁵¹⁹⁴¹ is an apocalyptic number.

It is an amenable number.

251941 is a deficient number, since it is larger than the sum of its proper divisors (1).

251941 is an equidigital number, since it uses as much as digits as its factorization.

251941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 360, while the sum is 22.

The square root of 251941 is about 501.9372470738. The cubic root of 251941 is about 63.1586661577.

The spelling of 251941 in words is "two hundred fifty-one thousand, nine hundred forty-one".