30542533 has 12 divisors (see below), whose sum is σ = 36676992. Its totient is φ = 25333560.

The previous prime is 30542531. The next prime is 30542569. The reversal of 30542533 is 33524503.

It is a happy number.

It is not a de Polignac number, because 30542533 - 2¹ = 30542531 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30542498 and 30542507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30542531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8535 + ... + 11572.

It is an arithmetic number, because the mean of its divisors is an integer number (3056416).

Almost surely, 2^30542533 is an apocalyptic number.

It is an amenable number.

30542533 is a deficient number, since it is larger than the sum of its proper divisors (6134459).

30542533 is a wasteful number, since it uses less digits than its factorization.

30542533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20152 (or 20145 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 25.

The square root of 30542533 is about 5526.5299239215. The cubic root of 30542533 is about 312.5851560996.

The spelling of 30542533 in words is "thirty million, five hundred forty-two thousand, five hundred thirty-three".