172908054 has 64 divisors (see below), whose sum is σ = 443854080. Its totient is φ = 49311360.

The previous prime is 172908017. The next prime is 172908059. The reversal of 172908054 is 450809271.

172908054 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172908059) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1537 + ... + 18659.

It is an arithmetic number, because the mean of its divisors is an integer number (6935220).

Almost surely, 2^172908054 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172908054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221927040).

172908054 is an abundant number, since it is smaller than the sum of its proper divisors (270946026).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172908054 is a wasteful number, since it uses less digits than its factorization.

172908054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17162 (or 17156 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 172908054 is about 13149.4507109613. The cubic root of 172908054 is about 557.1067335835.

The spelling of 172908054 in words is "one hundred seventy-two million, nine hundred eight thousand, fifty-four".