171053172 has 18 divisors (see below), whose sum is σ = 432384498. Its totient is φ = 57017712.

The previous prime is 171053149. The next prime is 171053177. The reversal of 171053172 is 271350171.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 129140496 + 41912676 = 11364^2 + 6474^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-3 number, since 3×171053172³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171053177) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2375703 + ... + 2375774.

It is an arithmetic number, because the mean of its divisors is an integer number (24021361).

Almost surely, 2^171053172 is an apocalyptic number.

171053172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

171053172 is an abundant number, since it is smaller than the sum of its proper divisors (261331326).

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

171053172 is a wasteful number, since it uses less digits than its factorization.

171053172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4751487 (or 4751482 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 27.

The square root of 171053172 is about 13078.7297548348. The cubic root of 171053172 is about 555.1074347655.

The spelling of 171053172 in words is "one hundred seventy-one million, fifty-three thousand, one hundred seventy-two".