172448461 has 4 divisors (see below), whose sum is σ = 172480000. Its totient is φ = 172416924.

The previous prime is 172448449. The next prime is 172448489. The reversal of 172448461 is 164844271.

It is a happy number.

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 not a de Polignac number, because 172448461 - 2⁷ = 172448333 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 172448461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172448491) 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, 5211 + ... + 19288.

It is an arithmetic number, because the mean of its divisors is an integer number (43120000).

Almost surely, 2^172448461 is an apocalyptic number.

It is an amenable number.

172448461 is a deficient number, since it is larger than the sum of its proper divisors (31539).

172448461 is an equidigital number, since it uses as much as digits as its factorization.

172448461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31538.

The product of its digits is 43008, while the sum is 37.

The square root of 172448461 is about 13131.9633337898. The cubic root of 172448461 is about 556.6126953941.

The spelling of 172448461 in words is "one hundred seventy-two million, four hundred forty-eight thousand, four hundred sixty-one".