120505513 has 2 divisors, whose sum is σ = 120505514. Its totient is φ = 120505512.

The previous prime is 120505493. The next prime is 120505523. The reversal of 120505513 is 315505021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85895824 + 34609689 = 9268^2 + 5883^2 .

It is a cyclic number.

It is not a de Polignac number, because 120505513 - 2⁵ = 120505481 is a prime.

It is not a weakly prime, because it can be changed into another prime (120505523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60252756 + 60252757.

It is an arithmetic number, because the mean of its divisors is an integer number (60252757).

Almost surely, 2^120505513 is an apocalyptic number.

It is an amenable number.

120505513 is a deficient number, since it is larger than the sum of its proper divisors (1).

120505513 is an equidigital number, since it uses as much as digits as its factorization.

120505513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 120505513 is about 10977.5003074470. The cubic root of 120505513 is about 493.9340569367.

The spelling of 120505513 in words is "one hundred twenty million, five hundred five thousand, five hundred thirteen".