172225451 has 8 divisors (see below), whose sum is σ = 174820800. Its totient is φ = 169640640.

The previous prime is 172225441. The next prime is 172225463. The reversal of 172225451 is 154522271.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 172225451 - 2¹⁰ = 172224427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172225441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34055 + ... + 38783.

It is an arithmetic number, because the mean of its divisors is an integer number (21852600).

Almost surely, 2^172225451 is an apocalyptic number.

172225451 is a deficient number, since it is larger than the sum of its proper divisors (2595349).

172225451 is an equidigital number, since it uses as much as digits as its factorization.

172225451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5269.

The product of its digits is 5600, while the sum is 29.

The square root of 172225451 is about 13123.4694726661. The cubic root of 172225451 is about 556.3726550882.

The spelling of 172225451 in words is "one hundred seventy-two million, two hundred twenty-five thousand, four hundred fifty-one".