30154493 has 2 divisors, whose sum is σ = 30154494. Its totient is φ = 30154492.

The previous prime is 30154483. The next prime is 30154529. The reversal of 30154493 is 39445103.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30063289 + 91204 = 5483^2 + 302^2 .

It is an emirp because it is prime and its reverse (39445103) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30154493 - 2⁴ = 30154477 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30154433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15077246 + 15077247.

It is an arithmetic number, because the mean of its divisors is an integer number (15077247).

Almost surely, 2^30154493 is an apocalyptic number.

It is an amenable number.

30154493 is a deficient number, since it is larger than the sum of its proper divisors (1).

30154493 is an equidigital number, since it uses as much as digits as its factorization.

30154493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 30154493 is about 5491.3106814312. The cubic root of 30154493 is about 311.2557216843.

Adding to 30154493 its reverse (39445103), we get a palindrome (69599596).

The spelling of 30154493 in words is "thirty million, one hundred fifty-four thousand, four hundred ninety-three".