30072461 has 2 divisors, whose sum is σ = 30072462. Its totient is φ = 30072460.

The previous prime is 30072397. The next prime is 30072463. The reversal of 30072461 is 16427003.

30072461 is nontrivially palindromic in base 4.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16859236 + 13213225 = 4106^2 + 3635^2 .

It is an emirp because it is prime and its reverse (16427003) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30072461 - 2⁶ = 30072397 is a prime.

Together with 30072463, 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 (30072463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15036230 + 15036231.

It is an arithmetic number, because the mean of its divisors is an integer number (15036231).

Almost surely, 2^30072461 is an apocalyptic number.

It is an amenable number.

30072461 is a deficient number, since it is larger than the sum of its proper divisors (1).

30072461 is an equidigital number, since it uses as much as digits as its factorization.

30072461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 30072461 is about 5483.8363396440. The cubic root of 30072461 is about 310.9732196417.

Adding to 30072461 its reverse (16427003), we get a palindrome (46499464).

The spelling of 30072461 in words is "thirty million, seventy-two thousand, four hundred sixty-one".