30050861 has 2 divisors, whose sum is σ = 30050862. Its totient is φ = 30050860.

The previous prime is 30050819. The next prime is 30050863. The reversal of 30050861 is 16805003.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27510025 + 2540836 = 5245^2 + 1594^2 .

It is an emirp because it is prime and its reverse (16805003) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30050861 is a prime.

Together with 30050863, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30050863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15025430 + 15025431.

It is an arithmetic number, because the mean of its divisors is an integer number (15025431).

Almost surely, 2^30050861 is an apocalyptic number.

It is an amenable number.

30050861 is a deficient number, since it is larger than the sum of its proper divisors (1).

30050861 is an equidigital number, since it uses as much as digits as its factorization.

30050861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 30050861 is about 5481.8665616740. The cubic root of 30050861 is about 310.8987480691.

Adding to 30050861 its reverse (16805003), we get a palindrome (46855864).

The spelling of 30050861 in words is "thirty million, fifty thousand, eight hundred sixty-one".