30532081 has 8 divisors (see below), whose sum is σ = 31190184. Its totient is φ = 29877120.

The previous prime is 30532057. The next prime is 30532091. The reversal of 30532081 is 18023503.

It can be written as a sum of positive squares in 4 ways, for example, as 1199025 + 29333056 = 1095^2 + 5416^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30532081 - 2⁷ = 30531953 is a prime.

It is a super-2 number, since 2×30532081² = 1864415940381122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30532091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39741 + ... + 40501.

It is an arithmetic number, because the mean of its divisors is an integer number (3898773).

Almost surely, 2^30532081 is an apocalyptic number.

It is an amenable number.

30532081 is a deficient number, since it is larger than the sum of its proper divisors (658103).

30532081 is an equidigital number, since it uses as much as digits as its factorization.

30532081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1571.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 30532081 is about 5525.5842225053. The cubic root of 30532081 is about 312.5494953069.

Adding to 30532081 its reverse (18023503), we get a palindrome (48555584).

The spelling of 30532081 in words is "thirty million, five hundred thirty-two thousand, eighty-one".