172241224 has 8 divisors (see below), whose sum is σ = 322952310. Its totient is φ = 86120608.

The previous prime is 172241221. The next prime is 172241233. The reversal of 172241224 is 422142271.

It can be written as a sum of positive squares in only one way, i.e., 171138724 + 1102500 = 13082^2 + 1050^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (172241221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10765069 + ... + 10765084.

Almost surely, 2^172241224 is an apocalyptic number.

It is an amenable number.

172241224 is a deficient number, since it is larger than the sum of its proper divisors (150711086).

172241224 is a wasteful number, since it uses less digits than its factorization.

172241224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21530159 (or 21530155 counting only the distinct ones).

The product of its digits is 1792, while the sum is 25.

The square root of 172241224 is about 13124.0704051754. The cubic root of 172241224 is about 556.3896394111.

Adding to 172241224 its reverse (422142271), we get a palindrome (594383495).

The spelling of 172241224 in words is "one hundred seventy-two million, two hundred forty-one thousand, two hundred twenty-four".