261363353 has 2 divisors, whose sum is σ = 261363354. Its totient is φ = 261363352.

The previous prime is 261363337. The next prime is 261363371. The reversal of 261363353 is 353363162.

261363353 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., 207590464 + 53772889 = 14408^2 + 7333^2 .

It is a cyclic number.

It is not a de Polignac number, because 261363353 - 2⁴ = 261363337 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (261363313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130681676 + 130681677.

It is an arithmetic number, because the mean of its divisors is an integer number (130681677).

Almost surely, 2^261363353 is an apocalyptic number.

It is an amenable number.

261363353 is a deficient number, since it is larger than the sum of its proper divisors (1).

261363353 is an equidigital number, since it uses as much as digits as its factorization.

261363353 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29160, while the sum is 32.

The square root of 261363353 is about 16166.7360032877. The cubic root of 261363353 is about 639.3640761807.

The spelling of 261363353 in words is "two hundred sixty-one million, three hundred sixty-three thousand, three hundred fifty-three".