30504421 has 2 divisors, whose sum is σ = 30504422. Its totient is φ = 30504420.

The previous prime is 30504407. The next prime is 30504427. The reversal of 30504421 is 12440503.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26936100 + 3568321 = 5190^2 + 1889^2 .

It is a cyclic number.

It is not a de Polignac number, because 30504421 - 2¹⁷ = 30373349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30504427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15252210 + 15252211.

It is an arithmetic number, because the mean of its divisors is an integer number (15252211).

Almost surely, 2^30504421 is an apocalyptic number.

It is an amenable number.

30504421 is a deficient number, since it is larger than the sum of its proper divisors (1).

30504421 is an equidigital number, since it uses as much as digits as its factorization.

30504421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 30504421 is about 5523.0807526235. The cubic root of 30504421 is about 312.4550838911.

Adding to 30504421 its reverse (12440503), we get a palindrome (42944924).

The spelling of 30504421 in words is "thirty million, five hundred four thousand, four hundred twenty-one".