172224959 has 2 divisors, whose sum is σ = 172224960. Its totient is φ = 172224958.

The previous prime is 172224919. The next prime is 172224971. The reversal of 172224959 is 959422271.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172224959 is a prime.

It is a super-2 number, since 2×172224959² = 59322873005103362, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172224919) 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, 86112479 + 86112480.

It is an arithmetic number, because the mean of its divisors is an integer number (86112480).

Almost surely, 2^172224959 is an apocalyptic number.

172224959 is a deficient number, since it is larger than the sum of its proper divisors (1).

172224959 is an equidigital number, since it uses as much as digits as its factorization.

172224959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 41.

The square root of 172224959 is about 13123.4507276097. The cubic root of 172224959 is about 556.3721252873.

The spelling of 172224959 in words is "one hundred seventy-two million, two hundred twenty-four thousand, nine hundred fifty-nine".