30275081 has 2 divisors, whose sum is σ = 30275082. Its totient is φ = 30275080.

The previous prime is 30275059. The next prime is 30275087. The reversal of 30275081 is 18057203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19219456 + 11055625 = 4384^2 + 3325^2 .

It is an emirp because it is prime and its reverse (18057203) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30275081 - 2²² = 26080777 is a prime.

It is a super-3 number, since 3×30275081³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30275081.

It is not a weakly prime, because it can be changed into another prime (30275087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15137540 + 15137541.

It is an arithmetic number, because the mean of its divisors is an integer number (15137541).

Almost surely, 2^30275081 is an apocalyptic number.

It is an amenable number.

30275081 is a deficient number, since it is larger than the sum of its proper divisors (1).

30275081 is an equidigital number, since it uses as much as digits as its factorization.

30275081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 30275081 is about 5502.2796184854. The cubic root of 30275081 is about 311.6700743461.

The spelling of 30275081 in words is "thirty million, two hundred seventy-five thousand, eighty-one".