172408513 has 8 divisors (see below), whose sum is σ = 175508928. Its totient is φ = 169332624.

The previous prime is 172408499. The next prime is 172408517. The reversal of 172408513 is 315804271.

172408513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172408513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172408517) 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, 8356 + ... + 20362.

It is an arithmetic number, because the mean of its divisors is an integer number (21938616).

Almost surely, 2^172408513 is an apocalyptic number.

It is an amenable number.

172408513 is a deficient number, since it is larger than the sum of its proper divisors (3100415).

172408513 is a wasteful number, since it uses less digits than its factorization.

172408513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12263.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 172408513 is about 13130.4422240837. The cubic root of 172408513 is about 556.5697119601.

The spelling of 172408513 in words is "one hundred seventy-two million, four hundred eight thousand, five hundred thirteen".