171398853 has 6 divisors (see below), whose sum is σ = 247576134. Its totient is φ = 114265896.

The previous prime is 171398849. The next prime is 171398869. The reversal of 171398853 is 358893171.

It can be written as a sum of positive squares in only one way, i.e., 166874724 + 4524129 = 12918^2 + 2127^2 .

It is not a de Polignac number, because 171398853 - 2² = 171398849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 171398799 and 171398808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171398813) 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, 9522150 + ... + 9522167.

It is an arithmetic number, because the mean of its divisors is an integer number (41262689).

Almost surely, 2^171398853 is an apocalyptic number.

It is an amenable number.

171398853 is a deficient number, since it is larger than the sum of its proper divisors (76177281).

171398853 is a wasteful number, since it uses less digits than its factorization.

171398853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19044323 (or 19044320 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 171398853 is about 13091.9384737326. The cubic root of 171398853 is about 555.4811216381.

The spelling of 171398853 in words is "one hundred seventy-one million, three hundred ninety-eight thousand, eight hundred fifty-three".