145770517 has 2 divisors, whose sum is σ = 145770518. Its totient is φ = 145770516.

The previous prime is 145770497. The next prime is 145770553. The reversal of 145770517 is 715077541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130096836 + 15673681 = 11406^2 + 3959^2 .

It is a cyclic number.

It is not a de Polignac number, because 145770517 - 2¹⁹ = 145246229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145770557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72885258 + 72885259.

It is an arithmetic number, because the mean of its divisors is an integer number (72885259).

Almost surely, 2^145770517 is an apocalyptic number.

It is an amenable number.

145770517 is a deficient number, since it is larger than the sum of its proper divisors (1).

145770517 is an equidigital number, since it uses as much as digits as its factorization.

145770517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34300, while the sum is 37.

The square root of 145770517 is about 12073.5461650668. The cubic root of 145770517 is about 526.2877136081.

The spelling of 145770517 in words is "one hundred forty-five million, seven hundred seventy thousand, five hundred seventeen".