172461009 has 16 divisors (see below), whose sum is σ = 264415232. Its totient is φ = 97942608.

The previous prime is 172460989. The next prime is 172461041. The reversal of 172461009 is 900164271.

It is a happy number.

172461009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 172461009 - 2²⁴ = 155683793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172461109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21769 + ... + 28614.

It is an arithmetic number, because the mean of its divisors is an integer number (16525952).

Almost surely, 2^172461009 is an apocalyptic number.

It is an amenable number.

172461009 is a deficient number, since it is larger than the sum of its proper divisors (91954223).

172461009 is a wasteful number, since it uses less digits than its factorization.

172461009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50556.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 172461009 is about 13132.4410906731. The cubic root of 172461009 is about 556.6261954792.

The spelling of 172461009 in words is "one hundred seventy-two million, four hundred sixty-one thousand, nine".