30992553 has 12 divisors (see below), whose sum is σ = 47123440. Its totient is φ = 19574136.

The previous prime is 30992509. The next prime is 30992573. The reversal of 30992553 is 35529903.

It is not a de Polignac number, because 30992553 - 2¹⁰ = 30991529 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30992573) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 90451 + ... + 90792.

Almost surely, 2^30992553 is an apocalyptic number.

It is an amenable number.

30992553 is a deficient number, since it is larger than the sum of its proper divisors (16130887).

30992553 is a wasteful number, since it uses less digits than its factorization.

30992553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181268 (or 181265 counting only the distinct ones).

The product of its (nonzero) digits is 36450, while the sum is 36.

The square root of 30992553 is about 5567.0955623197. The cubic root of 30992553 is about 314.1129085346.

The spelling of 30992553 in words is "thirty million, nine hundred ninety-two thousand, five hundred fifty-three".