30533552021 has 32 divisors (see below), whose sum is σ = 37685329920. Its totient is φ = 24183561600.

The previous prime is 30533551999. The next prime is 30533552057. The reversal of 30533552021 is 12025533503.

It is a cyclic number.

It is not a de Polignac number, because 30533552021 - 2⁶ = 30533551957 is a prime.

It is a super-2 number, since 2×30533552021² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30533552221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 381650 + ... + 454668.

It is an arithmetic number, because the mean of its divisors is an integer number (1177666560).

Almost surely, 2^30533552021 is an apocalyptic number.

30533552021 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

30533552021 is a deficient number, since it is larger than the sum of its proper divisors (7151777899).

30533552021 is a wasteful number, since it uses less digits than its factorization.

30533552021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73145.

The product of its (nonzero) digits is 13500, while the sum is 29.

The spelling of 30533552021 in words is "thirty billion, five hundred thirty-three million, five hundred fifty-two thousand, twenty-one".