30555530 has 16 divisors (see below), whose sum is σ = 55546344. Its totient is φ = 12100800.

The previous prime is 30555529. The next prime is 30555563. The reversal of 30555530 is 3555503.

It can be written as a sum of positive squares in 4 ways, for example, as 30129121 + 426409 = 5489^2 + 653^2 .

It is a super-6 number, since 6×30555530⁶ (a number of 46 digits) contains 666666 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30555530.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14117 + ... + 16136.

Almost surely, 2^30555530 is an apocalyptic number.

30555530 is a deficient number, since it is larger than the sum of its proper divisors (24990814).

30555530 is a wasteful number, since it uses less digits than its factorization.

30555530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30361.

The product of its (nonzero) digits is 5625, while the sum is 26.

The square root of 30555530 is about 5527.7056723382. The cubic root of 30555530 is about 312.6294887371.

The spelling of 30555530 in words is "thirty million, five hundred fifty-five thousand, five hundred thirty".