30500065 has 4 divisors (see below), whose sum is σ = 36600084. Its totient is φ = 24400048.

The previous prime is 30500059. The next prime is 30500077. The reversal of 30500065 is 56000503.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56000503 = 13 ⋅4307731.

It can be written as a sum of positive squares in 2 ways, for example, as 23193856 + 7306209 = 4816^2 + 2703^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30500065 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3050002 + ... + 3050011.

It is an arithmetic number, because the mean of its divisors is an integer number (9150021).

Almost surely, 2^30500065 is an apocalyptic number.

It is an amenable number.

30500065 is a deficient number, since it is larger than the sum of its proper divisors (6100019).

30500065 is an equidigital number, since it uses as much as digits as its factorization.

30500065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6100018.

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 30500065 is about 5522.6863934140. The cubic root of 30500065 is about 312.4402104281.

Adding to 30500065 its reverse (56000503), we get a palindrome (86500568).

The spelling of 30500065 in words is "thirty million, five hundred thousand, sixty-five".