145237271 has 2 divisors, whose sum is σ = 145237272. Its totient is φ = 145237270.

The previous prime is 145237243. The next prime is 145237277. The reversal of 145237271 is 172732541.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145237271 - 2⁶ = 145237207 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145237277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72618635 + 72618636.

It is an arithmetic number, because the mean of its divisors is an integer number (72618636).

Almost surely, 2^145237271 is an apocalyptic number.

145237271 is a deficient number, since it is larger than the sum of its proper divisors (1).

145237271 is an equidigital number, since it uses as much as digits as its factorization.

145237271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11760, while the sum is 32.

The square root of 145237271 is about 12051.4426937193. The cubic root of 145237271 is about 525.6451883408.

The spelling of 145237271 in words is "one hundred forty-five million, two hundred thirty-seven thousand, two hundred seventy-one".