145791271 has 2 divisors, whose sum is σ = 145791272. Its totient is φ = 145791270.

The previous prime is 145791257. The next prime is 145791277. The reversal of 145791271 is 172197541.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145791271 - 2⁷ = 145791143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145791271.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145791277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72895635 + 72895636.

It is an arithmetic number, because the mean of its divisors is an integer number (72895636).

Almost surely, 2^145791271 is an apocalyptic number.

145791271 is a deficient number, since it is larger than the sum of its proper divisors (1).

145791271 is an equidigital number, since it uses as much as digits as its factorization.

145791271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17640, while the sum is 37.

The square root of 145791271 is about 12074.4056168409. The cubic root of 145791271 is about 526.3126890675.

The spelling of 145791271 in words is "one hundred forty-five million, seven hundred ninety-one thousand, two hundred seventy-one".