261250411 has 2 divisors, whose sum is σ = 261250412. Its totient is φ = 261250410.

The previous prime is 261250351. The next prime is 261250421. The reversal of 261250411 is 114052162.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 261250411 - 2¹¹ = 261248363 is a prime.

It is equal to p_14260441 and since 261250411 and 14260441 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (261250421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130625205 + 130625206.

It is an arithmetic number, because the mean of its divisors is an integer number (130625206).

Almost surely, 2^261250411 is an apocalyptic number.

261250411 is a deficient number, since it is larger than the sum of its proper divisors (1).

261250411 is an equidigital number, since it uses as much as digits as its factorization.

261250411 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 261250411 is about 16163.2425892826. The cubic root of 261250411 is about 639.2719675504.

The spelling of 261250411 in words is "two hundred sixty-one million, two hundred fifty thousand, four hundred eleven".