261352363 has 2 divisors, whose sum is σ = 261352364. Its totient is φ = 261352362.

The previous prime is 261352331. The next prime is 261352393. The reversal of 261352363 is 363253162.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 261352363 - 2⁵ = 261352331 is a prime.

It is not a weakly prime, because it can be changed into another prime (261352313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130676181 + 130676182.

It is an arithmetic number, because the mean of its divisors is an integer number (130676182).

Almost surely, 2^261352363 is an apocalyptic number.

261352363 is a deficient number, since it is larger than the sum of its proper divisors (1).

261352363 is an equidigital number, since it uses as much as digits as its factorization.

261352363 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 31.

The square root of 261352363 is about 16166.3961042652. The cubic root of 261352363 is about 639.3551145703.

The spelling of 261352363 in words is "two hundred sixty-one million, three hundred fifty-two thousand, three hundred sixty-three".