30055000561 has 2 divisors, whose sum is σ = 30055000562. Its totient is φ = 30055000560.

The previous prime is 30055000429. The next prime is 30055000597. The reversal of 30055000561 is 16500055003.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28889460961 + 1165539600 = 169969^2 + 34140^2 .

It is a cyclic number.

It is not a de Polignac number, because 30055000561 - 2¹⁵ = 30054967793 is a prime.

It is not a weakly prime, because it can be changed into another prime (30055000861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15027500280 + 15027500281.

It is an arithmetic number, because the mean of its divisors is an integer number (15027500281).

Almost surely, 2^30055000561 is an apocalyptic number.

It is an amenable number.

30055000561 is a deficient number, since it is larger than the sum of its proper divisors (1).

30055000561 is an equidigital number, since it uses as much as digits as its factorization.

30055000561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2250, while the sum is 25.

Adding to 30055000561 its reverse (16500055003), we get a palindrome (46555055564).

The spelling of 30055000561 in words is "thirty billion, fifty-five million, five hundred sixty-one", and thus it is an aban number.