172867153 has 2 divisors, whose sum is σ = 172867154. Its totient is φ = 172867152.

The previous prime is 172867117. The next prime is 172867159. The reversal of 172867153 is 351768271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 160985344 + 11881809 = 12688^2 + 3447^2 .

It is an emirp because it is prime and its reverse (351768271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 172867153 - 2⁹ = 172866641 is a prime.

It is not a weakly prime, because it can be changed into another prime (172867159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86433576 + 86433577.

It is an arithmetic number, because the mean of its divisors is an integer number (86433577).

Almost surely, 2^172867153 is an apocalyptic number.

It is an amenable number.

172867153 is a deficient number, since it is larger than the sum of its proper divisors (1).

172867153 is an equidigital number, since it uses as much as digits as its factorization.

172867153 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70560, while the sum is 40.

The square root of 172867153 is about 13147.8953829120. The cubic root of 172867153 is about 557.0628026833.

The spelling of 172867153 in words is "one hundred seventy-two million, eight hundred sixty-seven thousand, one hundred fifty-three".