145303517 has 2 divisors, whose sum is σ = 145303518. Its totient is φ = 145303516.

The previous prime is 145303481. The next prime is 145303523. The reversal of 145303517 is 715303541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139098436 + 6205081 = 11794^2 + 2491^2 .

It is an emirp because it is prime and its reverse (715303541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145303517 - 2⁶ = 145303453 is a prime.

It is a super-2 number, since 2×145303517² = 42226224105138578, which contains 22 as substring.

It is a Chen prime.

It is equal to p_8194700 and since 145303517 and 8194700 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145303517.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145303537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72651758 + 72651759.

It is an arithmetic number, because the mean of its divisors is an integer number (72651759).

Almost surely, 2^145303517 is an apocalyptic number.

It is an amenable number.

145303517 is a deficient number, since it is larger than the sum of its proper divisors (1).

145303517 is an equidigital number, since it uses as much as digits as its factorization.

145303517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 145303517 is about 12054.1908479997. The cubic root of 145303517 is about 525.7250957409.

The spelling of 145303517 in words is "one hundred forty-five million, three hundred three thousand, five hundred seventeen".