30530253 has 16 divisors (see below), whose sum is σ = 43949696. Its totient is φ = 18740160.

The previous prime is 30530251. The next prime is 30530263. The reversal of 30530253 is 35203503.

It is not a de Polignac number, because 30530253 - 2¹ = 30530251 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30530251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20376 + ... + 21822.

It is an arithmetic number, because the mean of its divisors is an integer number (2746856).

Almost surely, 2^30530253 is an apocalyptic number.

It is an amenable number.

30530253 is a deficient number, since it is larger than the sum of its proper divisors (13419443).

30530253 is a wasteful number, since it uses less digits than its factorization.

30530253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2004.

The product of its (nonzero) digits is 1350, while the sum is 21.

The square root of 30530253 is about 5525.4188076561. The cubic root of 30530253 is about 312.5432575852.

Adding to 30530253 its reverse (35203503), we get a palindrome (65733756).

The spelling of 30530253 in words is "thirty million, five hundred thirty thousand, two hundred fifty-three".