145201271 has 4 divisors (see below), whose sum is σ = 146486352. Its totient is φ = 143916192.

The previous prime is 145201229. The next prime is 145201313. The reversal of 145201271 is 172102541.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (145201229) and next prime (145201313).

It is a cyclic number.

It is not a de Polignac number, because 145201271 - 2²² = 141006967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145201871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 642371 + ... + 642596.

It is an arithmetic number, because the mean of its divisors is an integer number (36621588).

Almost surely, 2^145201271 is an apocalyptic number.

145201271 is a deficient number, since it is larger than the sum of its proper divisors (1285081).

145201271 is a wasteful number, since it uses less digits than its factorization.

145201271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1285080.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 145201271 is about 12049.9490040415. The cubic root of 145201271 is about 525.6017541489.

The spelling of 145201271 in words is "one hundred forty-five million, two hundred one thousand, two hundred seventy-one".