145278571 has 2 divisors, whose sum is σ = 145278572. Its totient is φ = 145278570.

The previous prime is 145278569. The next prime is 145278587. The reversal of 145278571 is 175872541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145278571 - 2¹ = 145278569 is a prime.

It is a super-2 number, since 2×145278571² = 42211726383604082, which contains 22 as substring.

Together with 145278569, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (145278521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72639285 + 72639286.

It is an arithmetic number, because the mean of its divisors is an integer number (72639286).

Almost surely, 2^145278571 is an apocalyptic number.

145278571 is a deficient number, since it is larger than the sum of its proper divisors (1).

145278571 is an equidigital number, since it uses as much as digits as its factorization.

145278571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 78400, while the sum is 40.

The square root of 145278571 is about 12053.1560597215. The cubic root of 145278571 is about 525.6950081718.

The spelling of 145278571 in words is "one hundred forty-five million, two hundred seventy-eight thousand, five hundred seventy-one".