361120261 has 2 divisors, whose sum is σ = 361120262. Its totient is φ = 361120260.

The previous prime is 361120247. The next prime is 361120337. The reversal of 361120261 is 162021163.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 310852161 + 50268100 = 17631^2 + 7090^2 .

It is a cyclic number.

It is not a de Polignac number, because 361120261 - 2¹⁹ = 360595973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (361120241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180560130 + 180560131.

It is an arithmetic number, because the mean of its divisors is an integer number (180560131).

Almost surely, 2^361120261 is an apocalyptic number.

It is an amenable number.

361120261 is a deficient number, since it is larger than the sum of its proper divisors (1).

361120261 is an equidigital number, since it uses as much as digits as its factorization.

361120261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 361120261 is about 19003.1644996301. The cubic root of 361120261 is about 712.1157947479.

The spelling of 361120261 in words is "three hundred sixty-one million, one hundred twenty thousand, two hundred sixty-one".