145777529 has 2 divisors, whose sum is σ = 145777530. Its totient is φ = 145777528.

The previous prime is 145777493. The next prime is 145777543. The reversal of 145777529 is 925777541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141967225 + 3810304 = 11915^2 + 1952^2 .

It is a cyclic number.

It is not a de Polignac number, because 145777529 - 2⁸ = 145777273 is a prime.

It is a super-2 number, since 2×145777529² = 42502175922691682, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145777589) 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, 72888764 + 72888765.

It is an arithmetic number, because the mean of its divisors is an integer number (72888765).

Almost surely, 2^145777529 is an apocalyptic number.

It is an amenable number.

145777529 is a deficient number, since it is larger than the sum of its proper divisors (1).

145777529 is an equidigital number, since it uses as much as digits as its factorization.

145777529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 617400, while the sum is 47.

The square root of 145777529 is about 12073.8365485044. The cubic root of 145777529 is about 526.2961521464.

The spelling of 145777529 in words is "one hundred forty-five million, seven hundred seventy-seven thousand, five hundred twenty-nine".