172401226 has 8 divisors (see below), whose sum is σ = 261875520. Its totient is φ = 85109388.

The previous prime is 172401223. The next prime is 172401263. The reversal of 172401226 is 622104271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 172401226.

It is not an unprimeable number, because it can be changed into a prime (172401221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 545416 + ... + 545731.

It is an arithmetic number, because the mean of its divisors is an integer number (32734440).

Almost surely, 2^172401226 is an apocalyptic number.

172401226 is a deficient number, since it is larger than the sum of its proper divisors (89474294).

172401226 is a wasteful number, since it uses less digits than its factorization.

172401226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091228.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 172401226 is about 13130.1647362095. The cubic root of 172401226 is about 556.5618705440.

Adding to 172401226 its reverse (622104271), we get a palindrome (794505497).

The spelling of 172401226 in words is "one hundred seventy-two million, four hundred one thousand, two hundred twenty-six".