172555963 has 2 divisors, whose sum is σ = 172555964. Its totient is φ = 172555962.

The previous prime is 172555949. The next prime is 172555973. The reversal of 172555963 is 369555271.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 172555963 - 2⁹ = 172555451 is a prime.

It is not a weakly prime, because it can be changed into another prime (172555973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86277981 + 86277982.

It is an arithmetic number, because the mean of its divisors is an integer number (86277982).

Almost surely, 2^172555963 is an apocalyptic number.

172555963 is a deficient number, since it is larger than the sum of its proper divisors (1).

172555963 is an equidigital number, since it uses as much as digits as its factorization.

172555963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 283500, while the sum is 43.

The square root of 172555963 is about 13136.0558387973. The cubic root of 172555963 is about 556.7283329361.

The spelling of 172555963 in words is "one hundred seventy-two million, five hundred fifty-five thousand, nine hundred sixty-three".