30421051 has 2 divisors, whose sum is σ = 30421052. Its totient is φ = 30421050.

The previous prime is 30421031. The next prime is 30421117. The reversal of 30421051 is 15012403.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30421051 - 2¹⁷ = 30289979 is a prime.

It is not a weakly prime, because it can be changed into another prime (30421021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15210525 + 15210526.

It is an arithmetic number, because the mean of its divisors is an integer number (15210526).

Almost surely, 2^30421051 is an apocalyptic number.

30421051 is a deficient number, since it is larger than the sum of its proper divisors (1).

30421051 is an equidigital number, since it uses as much as digits as its factorization.

30421051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 30421051 is about 5515.5281705382. The cubic root of 30421051 is about 312.1701727539.

Adding to 30421051 its reverse (15012403), we get a palindrome (45433454).

The spelling of 30421051 in words is "thirty million, four hundred twenty-one thousand, fifty-one".