30533081 has 2 divisors, whose sum is σ = 30533082. Its totient is φ = 30533080.

The previous prime is 30533059. The next prime is 30533099. The reversal of 30533081 is 18033503.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30030400 + 502681 = 5480^2 + 709^2 .

It is a cyclic number.

It is not a de Polignac number, because 30533081 - 2⁶ = 30533017 is a prime.

It is a super-2 number, since 2×30533081² = 1864538070705122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (30533021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15266540 + 15266541.

It is an arithmetic number, because the mean of its divisors is an integer number (15266541).

Almost surely, 2^30533081 is an apocalyptic number.

It is an amenable number.

30533081 is a deficient number, since it is larger than the sum of its proper divisors (1).

30533081 is an equidigital number, since it uses as much as digits as its factorization.

30533081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 30533081 is about 5525.6747099336. The cubic root of 30533081 is about 312.5529075220.

Adding to 30533081 its reverse (18033503), we get a palindrome (48566584).

The spelling of 30533081 in words is "thirty million, five hundred thirty-three thousand, eighty-one".