145655171 has 2 divisors, whose sum is σ = 145655172. Its totient is φ = 145655170.

The previous prime is 145655149. The next prime is 145655173. The reversal of 145655171 is 171556541.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145655171 is a prime.

It is a Sophie Germain prime.

Together with 145655173, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145655173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72827585 + 72827586.

It is an arithmetic number, because the mean of its divisors is an integer number (72827586).

Almost surely, 2^145655171 is an apocalyptic number.

145655171 is a deficient number, since it is larger than the sum of its proper divisors (1).

145655171 is an equidigital number, since it uses as much as digits as its factorization.

145655171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21000, while the sum is 35.

The square root of 145655171 is about 12068.7684127255. The cubic root of 145655171 is about 526.1488624819.

The spelling of 145655171 in words is "one hundred forty-five million, six hundred fifty-five thousand, one hundred seventy-one".