30280253 has 2 divisors, whose sum is σ = 30280254. Its totient is φ = 30280252.

The previous prime is 30280241. The next prime is 30280291. The reversal of 30280253 is 35208203.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20775364 + 9504889 = 4558^2 + 3083^2 .

It is an emirp because it is prime and its reverse (35208203) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30280253 - 2⁶ = 30280189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30280223) 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, 15140126 + 15140127.

It is an arithmetic number, because the mean of its divisors is an integer number (15140127).

Almost surely, 2^30280253 is an apocalyptic number.

It is an amenable number.

30280253 is a deficient number, since it is larger than the sum of its proper divisors (1).

30280253 is an equidigital number, since it uses as much as digits as its factorization.

30280253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 30280253 is about 5502.7495854345. The cubic root of 30280253 is about 311.6878212388.

Adding to 30280253 its reverse (35208203), we get a palindrome (65488456).

The spelling of 30280253 in words is "thirty million, two hundred eighty thousand, two hundred fifty-three".