172016953 has 2 divisors, whose sum is σ = 172016954. Its totient is φ = 172016952.

The previous prime is 172016947. The next prime is 172016963. The reversal of 172016953 is 359610271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90782784 + 81234169 = 9528^2 + 9013^2 .

It is a cyclic number.

It is not a de Polignac number, because 172016953 - 2⁵ = 172016921 is a prime.

It is not a weakly prime, because it can be changed into another prime (172016903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86008476 + 86008477.

It is an arithmetic number, because the mean of its divisors is an integer number (86008477).

Almost surely, 2^172016953 is an apocalyptic number.

It is an amenable number.

172016953 is a deficient number, since it is larger than the sum of its proper divisors (1).

172016953 is an equidigital number, since it uses as much as digits as its factorization.

172016953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 172016953 is about 13115.5233597444. The cubic root of 172016953 is about 556.1480475017.

The spelling of 172016953 in words is "one hundred seventy-two million, sixteen thousand, nine hundred fifty-three".