30605513 has 2 divisors, whose sum is σ = 30605514. Its totient is φ = 30605512.

The previous prime is 30605501. The next prime is 30605521. The reversal of 30605513 is 31550603.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21557449 + 9048064 = 4643^2 + 3008^2 .

It is a cyclic number.

It is not a de Polignac number, because 30605513 - 2¹⁰ = 30604489 is a prime.

It is not a weakly prime, because it can be changed into another prime (30605563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15302756 + 15302757.

It is an arithmetic number, because the mean of its divisors is an integer number (15302757).

Almost surely, 2^30605513 is an apocalyptic number.

It is an amenable number.

30605513 is a deficient number, since it is larger than the sum of its proper divisors (1).

30605513 is an equidigital number, since it uses as much as digits as its factorization.

30605513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1350, while the sum is 23.

The square root of 30605513 is about 5532.2249592727. The cubic root of 30605513 is about 312.7998632105.

The spelling of 30605513 in words is "thirty million, six hundred five thousand, five hundred thirteen".