250541261 has 2 divisors, whose sum is σ = 250541262. Its totient is φ = 250541260.

The previous prime is 250541243. The next prime is 250541273. The reversal of 250541261 is 162145052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 208369225 + 42172036 = 14435^2 + 6494^2 .

It is a cyclic number.

It is not a de Polignac number, because 250541261 - 2¹⁴ = 250524877 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 250541261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (250541281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125270630 + 125270631.

It is an arithmetic number, because the mean of its divisors is an integer number (125270631).

Almost surely, 2^250541261 is an apocalyptic number.

It is an amenable number.

250541261 is a deficient number, since it is larger than the sum of its proper divisors (1).

250541261 is an equidigital number, since it uses as much as digits as its factorization.

250541261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 250541261 is about 15828.4952222250. The cubic root of 250541261 is about 630.4148279946.

The spelling of 250541261 in words is "two hundred fifty million, five hundred forty-one thousand, two hundred sixty-one".