261172883 has 2 divisors, whose sum is σ = 261172884. Its totient is φ = 261172882.

The previous prime is 261172871. The next prime is 261172913. The reversal of 261172883 is 388271162.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 261172883 - 2⁴ = 261172867 is a prime.

It is a super-2 number, since 2×261172883² = 136422549629063378, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (261172283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130586441 + 130586442.

It is an arithmetic number, because the mean of its divisors is an integer number (130586442).

Almost surely, 2^261172883 is an apocalyptic number.

261172883 is a deficient number, since it is larger than the sum of its proper divisors (1).

261172883 is an equidigital number, since it uses as much as digits as its factorization.

261172883 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 38.

The square root of 261172883 is about 16160.8441301808. The cubic root of 261172883 is about 639.2087250591.

The spelling of 261172883 in words is "two hundred sixty-one million, one hundred seventy-two thousand, eight hundred eighty-three".