172305883 has 2 divisors, whose sum is σ = 172305884. Its totient is φ = 172305882.

The previous prime is 172305877. The next prime is 172305923. The reversal of 172305883 is 388503271.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 172305883 - 2¹⁷ = 172174811 is a prime.

It is not a weakly prime, because it can be changed into another prime (172305803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86152941 + 86152942.

It is an arithmetic number, because the mean of its divisors is an integer number (86152942).

Almost surely, 2^172305883 is an apocalyptic number.

172305883 is a deficient number, since it is larger than the sum of its proper divisors (1).

172305883 is an equidigital number, since it uses as much as digits as its factorization.

172305883 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 172305883 is about 13126.5335485040. The cubic root of 172305883 is about 556.4592532083.

The spelling of 172305883 in words is "one hundred seventy-two million, three hundred five thousand, eight hundred eighty-three".