171342253 has 2 divisors, whose sum is σ = 171342254. Its totient is φ = 171342252.

The previous prime is 171342233. The next prime is 171342257. The reversal of 171342253 is 352243171.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 165945924 + 5396329 = 12882^2 + 2323^2 .

It is a cyclic number.

It is not a de Polignac number, because 171342253 - 2²¹ = 169245101 is a prime.

It is equal to p_9574030 and since 171342253 and 9574030 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171342257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85671126 + 85671127.

It is an arithmetic number, because the mean of its divisors is an integer number (85671127).

Almost surely, 2^171342253 is an apocalyptic number.

It is an amenable number.

171342253 is a deficient number, since it is larger than the sum of its proper divisors (1).

171342253 is an equidigital number, since it uses as much as digits as its factorization.

171342253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 28.

The square root of 171342253 is about 13089.7766596684. The cubic root of 171342253 is about 555.4199705231.

The spelling of 171342253 in words is "one hundred seventy-one million, three hundred forty-two thousand, two hundred fifty-three".