30630253 has 2 divisors, whose sum is σ = 30630254. Its totient is φ = 30630252.

The previous prime is 30630221. The next prime is 30630269. The reversal of 30630253 is 35203603.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29626249 + 1004004 = 5443^2 + 1002^2 .

It is a cyclic number.

It is not a de Polignac number, because 30630253 - 2⁵ = 30630221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30730253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15315126 + 15315127.

It is an arithmetic number, because the mean of its divisors is an integer number (15315127).

Almost surely, 2^30630253 is an apocalyptic number.

It is an amenable number.

30630253 is a deficient number, since it is larger than the sum of its proper divisors (1).

30630253 is an equidigital number, since it uses as much as digits as its factorization.

30630253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 22.

The square root of 30630253 is about 5534.4604976456. The cubic root of 30630253 is about 312.8841245479.

Adding to 30630253 its reverse (35203603), we get a palindrome (65833856).

The spelling of 30630253 in words is "thirty million, six hundred thirty thousand, two hundred fifty-three".