171051047 has 4 divisors (see below), whose sum is σ = 171910800. Its totient is φ = 170191296.

The previous prime is 171051043. The next prime is 171051103. The reversal of 171051047 is 740150171.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 740150171 = 2273 ⋅325627.

It is a cyclic number.

It is not a de Polignac number, because 171051047 - 2² = 171051043 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171051043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 429578 + ... + 429975.

It is an arithmetic number, because the mean of its divisors is an integer number (42977700).

Almost surely, 2^171051047 is an apocalyptic number.

171051047 is a deficient number, since it is larger than the sum of its proper divisors (859753).

171051047 is an equidigital number, since it uses as much as digits as its factorization.

171051047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859752.

The product of its (nonzero) digits is 980, while the sum is 26.

The square root of 171051047 is about 13078.6485158062. The cubic root of 171051047 is about 555.1051360491.

The spelling of 171051047 in words is "one hundred seventy-one million, fifty-one thousand, forty-seven".