172163087 has 2 divisors, whose sum is σ = 172163088. Its totient is φ = 172163086.

The previous prime is 172163081. The next prime is 172163137. The reversal of 172163087 is 780361271.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 172163087 - 2¹⁰ = 172162063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172163081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86081543 + 86081544.

It is an arithmetic number, because the mean of its divisors is an integer number (86081544).

Almost surely, 2^172163087 is an apocalyptic number.

172163087 is a deficient number, since it is larger than the sum of its proper divisors (1).

172163087 is an equidigital number, since it uses as much as digits as its factorization.

172163087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 172163087 is about 13121.0932090280. The cubic root of 172163087 is about 556.3054915477.

The spelling of 172163087 in words is "one hundred seventy-two million, one hundred sixty-three thousand, eighty-seven".