261315083 has 2 divisors, whose sum is σ = 261315084. Its totient is φ = 261315082.

The previous prime is 261315049. The next prime is 261315091. The reversal of 261315083 is 380513162.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 261315083 - 2¹⁰ = 261314059 is a prime.

It is not a weakly prime, because it can be changed into another prime (261315283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130657541 + 130657542.

It is an arithmetic number, because the mean of its divisors is an integer number (130657542).

Almost surely, 2^261315083 is an apocalyptic number.

261315083 is a deficient number, since it is larger than the sum of its proper divisors (1).

261315083 is an equidigital number, since it uses as much as digits as its factorization.

261315083 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 261315083 is about 16165.2430541579. The cubic root of 261315083 is about 639.3247133502.

The spelling of 261315083 in words is "two hundred sixty-one million, three hundred fifteen thousand, eighty-three".