30085481 has 2 divisors, whose sum is σ = 30085482. Its totient is φ = 30085480.

The previous prime is 30085421. The next prime is 30085483. The reversal of 30085481 is 18458003.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30085225 + 256 = 5485^2 + 16^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30085481 is a prime.

It is a super-2 number, since 2×30085481² = 1810272334002722, which contains 22 as substring.

Together with 30085483, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30085483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15042740 + 15042741.

It is an arithmetic number, because the mean of its divisors is an integer number (15042741).

Almost surely, 2^30085481 is an apocalyptic number.

It is an amenable number.

30085481 is a deficient number, since it is larger than the sum of its proper divisors (1).

30085481 is an equidigital number, since it uses as much as digits as its factorization.

30085481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 30085481 is about 5485.0233363223. The cubic root of 30085481 is about 311.0180922261.

The spelling of 30085481 in words is "thirty million, eighty-five thousand, four hundred eighty-one".