172224029 has 4 divisors (see below), whose sum is σ = 174404160. Its totient is φ = 170043900.

The previous prime is 172224001. The next prime is 172224053. The reversal of 172224029 is 920422271.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172224029 is a prime.

It is a super-2 number, since 2×172224029² = 59322232329985682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 172223992 and 172224010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172224329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1089947 + ... + 1090104.

It is an arithmetic number, because the mean of its divisors is an integer number (43601040).

Almost surely, 2^172224029 is an apocalyptic number.

It is an amenable number.

172224029 is a deficient number, since it is larger than the sum of its proper divisors (2180131).

172224029 is an equidigital number, since it uses as much as digits as its factorization.

172224029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2180130.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 172224029 is about 13123.4152948080. The cubic root of 172224029 is about 556.3711238316.

The spelling of 172224029 in words is "one hundred seventy-two million, two hundred twenty-four thousand, twenty-nine".