261045341 has 2 divisors, whose sum is σ = 261045342. Its totient is φ = 261045340.

The previous prime is 261045329. The next prime is 261045349. The reversal of 261045341 is 143540162.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 256960900 + 4084441 = 16030^2 + 2021^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-261045341 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 261045341.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (261045349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130522670 + 130522671.

It is an arithmetic number, because the mean of its divisors is an integer number (130522671).

Almost surely, 2^261045341 is an apocalyptic number.

It is an amenable number.

261045341 is a deficient number, since it is larger than the sum of its proper divisors (1).

261045341 is an equidigital number, since it uses as much as digits as its factorization.

261045341 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 261045341 is about 16156.8976291861. The cubic root of 261045341 is about 639.1046570401.

The spelling of 261045341 in words is "two hundred sixty-one million, forty-five thousand, three hundred forty-one".