145317671 has 2 divisors, whose sum is σ = 145317672. Its totient is φ = 145317670.

The previous prime is 145317659. The next prime is 145317713. The reversal of 145317671 is 176713541.

It is a weak prime.

It is an emirp because it is prime and its reverse (176713541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145317671 - 2⁶ = 145317607 is a prime.

It is a super-2 number, since 2×145317671² = 42234451009728482, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145317631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72658835 + 72658836.

It is an arithmetic number, because the mean of its divisors is an integer number (72658836).

Almost surely, 2^145317671 is an apocalyptic number.

145317671 is a deficient number, since it is larger than the sum of its proper divisors (1).

145317671 is an equidigital number, since it uses as much as digits as its factorization.

145317671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17640, while the sum is 35.

The square root of 145317671 is about 12054.7779324217. Note that the first 3 decimals coincide. The cubic root of 145317671 is about 525.7421654617.

The spelling of 145317671 in words is "one hundred forty-five million, three hundred seventeen thousand, six hundred seventy-one".