172224622 has 4 divisors (see below), whose sum is σ = 258336936. Its totient is φ = 86112310.

The previous prime is 172224617. The next prime is 172224631. The reversal of 172224622 is 226422271.

172224622 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×172224622² = 59322640846085768, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43056154 + ... + 43056157.

It is an arithmetic number, because the mean of its divisors is an integer number (64584234).

Almost surely, 2^172224622 is an apocalyptic number.

172224622 is a deficient number, since it is larger than the sum of its proper divisors (86112314).

172224622 is an equidigital number, since it uses as much as digits as its factorization.

172224622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86112313.

The product of its digits is 5376, while the sum is 28.

The square root of 172224622 is about 13123.4378879926. The cubic root of 172224622 is about 556.3717623946.

Adding to 172224622 its reverse (226422271), we get a palindrome (398646893).

The spelling of 172224622 in words is "one hundred seventy-two million, two hundred twenty-four thousand, six hundred twenty-two".