145530773 has 2 divisors, whose sum is σ = 145530774. Its totient is φ = 145530772.

The previous prime is 145530733. The next prime is 145530809. The reversal of 145530773 is 377035541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118417924 + 27112849 = 10882^2 + 5207^2 .

It is a cyclic number.

It is not a de Polignac number, because 145530773 - 2¹⁴ = 145514389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145530703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72765386 + 72765387.

It is an arithmetic number, because the mean of its divisors is an integer number (72765387).

Almost surely, 2^145530773 is an apocalyptic number.

It is an amenable number.

145530773 is a deficient number, since it is larger than the sum of its proper divisors (1).

145530773 is an equidigital number, since it uses as much as digits as its factorization.

145530773 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 44100, while the sum is 35.

The square root of 145530773 is about 12063.6135962654. The cubic root of 145530773 is about 525.9990325610. Note that the first 3 decimals are identical.

The spelling of 145530773 in words is "one hundred forty-five million, five hundred thirty thousand, seven hundred seventy-three".