120445517 has 2 divisors, whose sum is σ = 120445518. Its totient is φ = 120445516.

The previous prime is 120445499. The next prime is 120445529. The reversal of 120445517 is 715544021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94750756 + 25694761 = 9734^2 + 5069^2 .

It is an emirp because it is prime and its reverse (715544021) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120445517 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120445517.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120405517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60222758 + 60222759.

It is an arithmetic number, because the mean of its divisors is an integer number (60222759).

Almost surely, 2^120445517 is an apocalyptic number.

It is an amenable number.

120445517 is a deficient number, since it is larger than the sum of its proper divisors (1).

120445517 is an equidigital number, since it uses as much as digits as its factorization.

120445517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 120445517 is about 10974.7672868266. The cubic root of 120445517 is about 493.8520717886.

Adding to 120445517 its reverse (715544021), we get a palindrome (835989538).

The spelling of 120445517 in words is "one hundred twenty million, four hundred forty-five thousand, five hundred seventeen".