30540493 has 2 divisors, whose sum is σ = 30540494. Its totient is φ = 30540492.

The previous prime is 30540479. The next prime is 30540529. The reversal of 30540493 is 39404503.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30327049 + 213444 = 5507^2 + 462^2 .

It is a cyclic number.

It is not a de Polignac number, because 30540493 - 2⁹ = 30539981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30540403) 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, 15270246 + 15270247.

It is an arithmetic number, because the mean of its divisors is an integer number (15270247).

Almost surely, 2^30540493 is an apocalyptic number.

It is an amenable number.

30540493 is a deficient number, since it is larger than the sum of its proper divisors (1).

30540493 is an equidigital number, since it uses as much as digits as its factorization.

30540493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 30540493 is about 5526.3453565625. The cubic root of 30540493 is about 312.5781965380.

Adding to 30540493 its reverse (39404503), we get a palindrome (69944996).

The spelling of 30540493 in words is "thirty million, five hundred forty thousand, four hundred ninety-three".