171073493 has 4 divisors (see below), whose sum is σ = 171807948. Its totient is φ = 170339040.

The previous prime is 171073489. The next prime is 171073589. The reversal of 171073493 is 394370171.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 394370171 = 13 ⋅30336167.

It can be written as a sum of positive squares in 2 ways, for example, as 47018449 + 124055044 = 6857^2 + 11138^2 .

It is a cyclic number.

It is not a de Polignac number, because 171073493 - 2² = 171073489 is a prime.

It is a super-2 number, since 2×171073493² = 58532280014442098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171073423) 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, 366878 + ... + 367343.

It is an arithmetic number, because the mean of its divisors is an integer number (42951987).

Almost surely, 2^171073493 is an apocalyptic number.

It is an amenable number.

171073493 is a deficient number, since it is larger than the sum of its proper divisors (734455).

171073493 is an equidigital number, since it uses as much as digits as its factorization.

171073493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734454.

The product of its (nonzero) digits is 15876, while the sum is 35.

The square root of 171073493 is about 13079.5066038440. The cubic root of 171073493 is about 555.1294160231.

The spelling of 171073493 in words is "one hundred seventy-one million, seventy-three thousand, four hundred ninety-three".