30525643 has 2 divisors, whose sum is σ = 30525644. Its totient is φ = 30525642.

The previous prime is 30525637. The next prime is 30525673. The reversal of 30525643 is 34652503.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30525643 - 2¹³ = 30517451 is a prime.

It is not a weakly prime, because it can be changed into another prime (30525613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15262821 + 15262822.

It is an arithmetic number, because the mean of its divisors is an integer number (15262822).

Almost surely, 2^30525643 is an apocalyptic number.

30525643 is a deficient number, since it is larger than the sum of its proper divisors (1).

30525643 is an equidigital number, since it uses as much as digits as its factorization.

30525643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 30525643 is about 5525.0016289590. The cubic root of 30525643 is about 312.5275256821.

The spelling of 30525643 in words is "thirty million, five hundred twenty-five thousand, six hundred forty-three".