145880569 has 2 divisors, whose sum is σ = 145880570. Its totient is φ = 145880568.

The previous prime is 145880543. The next prime is 145880597. The reversal of 145880569 is 965088541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91298025 + 54582544 = 9555^2 + 7388^2 .

It is an emirp because it is prime and its reverse (965088541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145880569 - 2¹¹ = 145878521 is a prime.

It is a super-2 number, since 2×145880569² = 42562280823527522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145880369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72940284 + 72940285.

It is an arithmetic number, because the mean of its divisors is an integer number (72940285).

Almost surely, 2^145880569 is an apocalyptic number.

It is an amenable number.

145880569 is a deficient number, since it is larger than the sum of its proper divisors (1).

145880569 is an equidigital number, since it uses as much as digits as its factorization.

145880569 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 345600, while the sum is 46.

The square root of 145880569 is about 12078.1028725541. The cubic root of 145880569 is about 526.4201236617.

The spelling of 145880569 in words is "one hundred forty-five million, eight hundred eighty thousand, five hundred sixty-nine".