171125503 has 2 divisors, whose sum is σ = 171125504. Its totient is φ = 171125502.

The previous prime is 171125501. The next prime is 171125527. The reversal of 171125503 is 305521171.

It is a weak prime.

It is an emirp because it is prime and its reverse (305521171) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 171125503 - 2¹ = 171125501 is a prime.

Together with 171125501, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171125501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85562751 + 85562752.

It is an arithmetic number, because the mean of its divisors is an integer number (85562752).

Almost surely, 2^171125503 is an apocalyptic number.

171125503 is a deficient number, since it is larger than the sum of its proper divisors (1).

171125503 is an equidigital number, since it uses as much as digits as its factorization.

171125503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1050, while the sum is 25.

The square root of 171125503 is about 13081.4946775971. The cubic root of 171125503 is about 555.1856673940.

Adding to 171125503 its reverse (305521171), we get a palindrome (476646674).

The spelling of 171125503 in words is "one hundred seventy-one million, one hundred twenty-five thousand, five hundred three".