171057020 has 12 divisors (see below), whose sum is σ = 359219784. Its totient is φ = 68422800.

The previous prime is 171057013. The next prime is 171057059. The reversal of 171057020 is 20750171.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4276406 + ... + 4276445.

It is an arithmetic number, because the mean of its divisors is an integer number (29934982).

Almost surely, 2^171057020 is an apocalyptic number.

171057020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

171057020 is an abundant number, since it is smaller than the sum of its proper divisors (188162764).

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

171057020 is a wasteful number, since it uses less digits than its factorization.

171057020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8552860 (or 8552858 counting only the distinct ones).

The product of its (nonzero) digits is 490, while the sum is 23.

The square root of 171057020 is about 13078.8768630949. The cubic root of 171057020 is about 555.1115972868. Note that the first 3 decimals are identical.

The spelling of 171057020 in words is "one hundred seventy-one million, fifty-seven thousand, twenty".