171012956 has 6 divisors (see below), whose sum is σ = 299272680. Its totient is φ = 85506476.

The previous prime is 171012953. The next prime is 171012973. The reversal of 171012956 is 659210171.

171012956 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×171012956² = 58490862239715872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171012953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21376616 + ... + 21376623.

It is an arithmetic number, because the mean of its divisors is an integer number (49878780).

Almost surely, 2^171012956 is an apocalyptic number.

It is an amenable number.

171012956 is a deficient number, since it is larger than the sum of its proper divisors (128259724).

171012956 is a wasteful number, since it uses less digits than its factorization.

171012956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42753243 (or 42753241 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 32.

The square root of 171012956 is about 13077.1922062804. The cubic root of 171012956 is about 555.0639279228.

The spelling of 171012956 in words is "one hundred seventy-one million, twelve thousand, nine hundred fifty-six".