145257271 has 2 divisors, whose sum is σ = 145257272. Its totient is φ = 145257270.

The previous prime is 145257263. The next prime is 145257283. The reversal of 145257271 is 172752541.

145257271 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145257271 - 2³ = 145257263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145257241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72628635 + 72628636.

It is an arithmetic number, because the mean of its divisors is an integer number (72628636).

Almost surely, 2^145257271 is an apocalyptic number.

145257271 is a deficient number, since it is larger than the sum of its proper divisors (1).

145257271 is an equidigital number, since it uses as much as digits as its factorization.

145257271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19600, while the sum is 34.

The square root of 145257271 is about 12052.2724413282. The cubic root of 145257271 is about 525.6693153462.

The spelling of 145257271 in words is "one hundred forty-five million, two hundred fifty-seven thousand, two hundred seventy-one".