171427513 has 4 divisors (see below), whose sum is σ = 172065060. Its totient is φ = 170789968.

The previous prime is 171427499. The next prime is 171427547. The reversal of 171427513 is 315724171.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 315724171 = 7 ⋅45103453.

It can be written as a sum of positive squares in 2 ways, for example, as 13749264 + 157678249 = 3708^2 + 12557^2 .

It is a cyclic number.

It is not a de Polignac number, because 171427513 - 2¹⁷ = 171296441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (171427313) 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, 318370 + ... + 318907.

It is an arithmetic number, because the mean of its divisors is an integer number (43016265).

Almost surely, 2^171427513 is an apocalyptic number.

It is an amenable number.

171427513 is a deficient number, since it is larger than the sum of its proper divisors (637547).

171427513 is an equidigital number, since it uses as much as digits as its factorization.

171427513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637546.

The product of its digits is 5880, while the sum is 31.

The square root of 171427513 is about 13093.0329946884. The cubic root of 171427513 is about 555.5120810084.

The spelling of 171427513 in words is "one hundred seventy-one million, four hundred twenty-seven thousand, five hundred thirteen".