171383957 has 2 divisors, whose sum is σ = 171383958. Its totient is φ = 171383956.

The previous prime is 171383941. The next prime is 171383959. The reversal of 171383957 is 759383171.

171383957 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 143017681 + 28366276 = 11959^2 + 5326^2 .

It is an emirp because it is prime and its reverse (759383171) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 171383957 - 2⁴ = 171383941 is a prime.

Together with 171383959, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171383959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85691978 + 85691979.

It is an arithmetic number, because the mean of its divisors is an integer number (85691979).

Almost surely, 2^171383957 is an apocalyptic number.

It is an amenable number.

171383957 is a deficient number, since it is larger than the sum of its proper divisors (1).

171383957 is an equidigital number, since it uses as much as digits as its factorization.

171383957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 158760, while the sum is 44.

The square root of 171383957 is about 13091.3695616616. The cubic root of 171383957 is about 555.4650291801.

It can be divided in two parts, 1713 and 83957, that multiplied together give a palindrome (143818341).

The spelling of 171383957 in words is "one hundred seventy-one million, three hundred eighty-three thousand, nine hundred fifty-seven".