171402361 has 4 divisors (see below), whose sum is σ = 184587172. Its totient is φ = 158217552.

The previous prime is 171402349. The next prime is 171402377. The reversal of 171402361 is 163204171.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 163204171 = 13 ⋅12554167.

It can be written as a sum of positive squares in 2 ways, for example, as 7075600 + 164326761 = 2660^2 + 12819^2 .

It is a cyclic number.

It is not a de Polignac number, because 171402361 - 2²¹ = 169305209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (171402311) 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, 6592386 + ... + 6592411.

It is an arithmetic number, because the mean of its divisors is an integer number (46146793).

Almost surely, 2^171402361 is an apocalyptic number.

It is an amenable number.

171402361 is a deficient number, since it is larger than the sum of its proper divisors (13184811).

171402361 is a wasteful number, since it uses less digits than its factorization.

171402361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13184810.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 171402361 is about 13092.0724486233. The cubic root of 171402361 is about 555.4849112676.

The spelling of 171402361 in words is "one hundred seventy-one million, four hundred two thousand, three hundred sixty-one".