30000505 has 4 divisors (see below), whose sum is σ = 36000612. Its totient is φ = 24000400.

The previous prime is 30000493. The next prime is 30000511. The reversal of 30000505 is 50500003.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23503104 + 6497401 = 4848^2 + 2549^2 .

It is not a de Polignac number, because 30000505 - 2⁵ = 30000473 is a prime.

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 3000046 + ... + 3000055.

It is an arithmetic number, because the mean of its divisors is an integer number (9000153).

Almost surely, 2^30000505 is an apocalyptic number.

It is an amenable number.

30000505 is a deficient number, since it is larger than the sum of its proper divisors (6000107).

30000505 is an equidigital number, since it uses as much as digits as its factorization.

30000505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6000106.

The product of its (nonzero) digits is 75, while the sum is 13.

The square root of 30000505 is about 5477.2716748396. The cubic root of 30000505 is about 310.7249940883.

Adding to 30000505 its reverse (50500003), we get a palindrome (80500508).

The spelling of 30000505 in words is "thirty million, five hundred five", and thus it is an aban number.