145287719 has 2 divisors, whose sum is σ = 145287720. Its totient is φ = 145287718.

The previous prime is 145287713. The next prime is 145287733. The reversal of 145287719 is 917782541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145287719 - 2¹⁶ = 145222183 is a prime.

It is a super-2 number, since 2×145287719² = 42217042584445922, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145287719.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145287713) 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, 72643859 + 72643860.

It is an arithmetic number, because the mean of its divisors is an integer number (72643860).

Almost surely, 2^145287719 is an apocalyptic number.

145287719 is a deficient number, since it is larger than the sum of its proper divisors (1).

145287719 is an equidigital number, since it uses as much as digits as its factorization.

145287719 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141120, while the sum is 44.

The square root of 145287719 is about 12053.5355394175. The cubic root of 145287719 is about 525.7060420473.

The spelling of 145287719 in words is "one hundred forty-five million, two hundred eighty-seven thousand, seven hundred nineteen".