261141841 has 2 divisors, whose sum is σ = 261141842. Its totient is φ = 261141840.

The previous prime is 261141827. The next prime is 261141857. The reversal of 261141841 is 148141162.

261141841 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., 190329616 + 70812225 = 13796^2 + 8415^2 .

It is a cyclic number.

It is not a de Polignac number, because 261141841 - 2⁵ = 261141809 is a prime.

It is a super-2 number, since 2×261141841² = 136390122241738562, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (261142841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130570920 + 130570921.

It is an arithmetic number, because the mean of its divisors is an integer number (130570921).

Almost surely, 2^261141841 is an apocalyptic number.

It is an amenable number.

261141841 is a deficient number, since it is larger than the sum of its proper divisors (1).

261141841 is an equidigital number, since it uses as much as digits as its factorization.

261141841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1536, while the sum is 28.

The square root of 261141841 is about 16159.8836938884. The cubic root of 261141841 is about 639.1833994291.

The spelling of 261141841 in words is "two hundred sixty-one million, one hundred forty-one thousand, eight hundred forty-one".