145849271 has 2 divisors, whose sum is σ = 145849272. Its totient is φ = 145849270.

The previous prime is 145849229. The next prime is 145849321. The reversal of 145849271 is 172948541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145849271 - 2¹⁰ = 145848247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145849211) 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, 72924635 + 72924636.

It is an arithmetic number, because the mean of its divisors is an integer number (72924636).

Almost surely, 2^145849271 is an apocalyptic number.

145849271 is a deficient number, since it is larger than the sum of its proper divisors (1).

145849271 is an equidigital number, since it uses as much as digits as its factorization.

145849271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 41.

The square root of 145849271 is about 12076.8071525549. The cubic root of 145849271 is about 526.3824739698.

The spelling of 145849271 in words is "one hundred forty-five million, eight hundred forty-nine thousand, two hundred seventy-one".