30530506 has 4 divisors (see below), whose sum is σ = 45795762. Its totient is φ = 15265252.

The previous prime is 30530503. The next prime is 30530519. The reversal of 30530506 is 60503503.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60503503 = 139 ⋅435277.

It can be written as a sum of positive squares in only one way, i.e., 26429881 + 4100625 = 5141^2 + 2025^2 .

It is a super-2 number, since 2×30530506² = 1864223593232072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30530501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7632625 + ... + 7632628.

Almost surely, 2^30530506 is an apocalyptic number.

30530506 is a deficient number, since it is larger than the sum of its proper divisors (15265256).

30530506 is a wasteful number, since it uses less digits than its factorization.

30530506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15265255.

The product of its (nonzero) digits is 1350, while the sum is 22.

The square root of 30530506 is about 5525.4417018009. The cubic root of 30530506 is about 312.5441209171.

The spelling of 30530506 in words is "thirty million, five hundred thirty thousand, five hundred six".