171380057 has 6 divisors (see below), whose sum is σ = 180875178. Its totient is φ = 162359712.

The previous prime is 171380051. The next prime is 171380071. The reversal of 171380057 is 750083171.

171380057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 171374281 + 5776 = 13091^2 + 76^2 .

It is not a de Polignac number, because 171380057 - 2⁸ = 171379801 is a prime.

It is a super-2 number, since 2×171380057² = 58742247874646498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (171380051) 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, 237008 + ... + 237729.

It is an arithmetic number, because the mean of its divisors is an integer number (30145863).

Almost surely, 2^171380057 is an apocalyptic number.

It is an amenable number.

171380057 is a deficient number, since it is larger than the sum of its proper divisors (9495121).

171380057 is an equidigital number, since it uses as much as digits as its factorization.

171380057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474775 (or 474756 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 32.

The square root of 171380057 is about 13091.2206077203. The cubic root of 171380057 is about 555.4608157752.

The spelling of 171380057 in words is "one hundred seventy-one million, three hundred eighty thousand, fifty-seven".