253030321 has 8 divisors (see below), whose sum is σ = 258660864. Its totient is φ = 247431600.

The previous prime is 253030303. The next prime is 253030357. The reversal of 253030321 is 123030352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 253030321 - 2⁵ = 253030289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253030301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8496 + ... + 24046.

It is an arithmetic number, because the mean of its divisors is an integer number (32332608).

Almost surely, 2^253030321 is an apocalyptic number.

It is an amenable number.

253030321 is a deficient number, since it is larger than the sum of its proper divisors (5630543).

253030321 is a wasteful number, since it uses less digits than its factorization.

253030321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15911.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 253030321 is about 15906.9268245001. The cubic root of 253030321 is about 632.4956196481.

Adding to 253030321 its reverse (123030352), we get a palindrome (376060673).

The spelling of 253030321 in words is "two hundred fifty-three million, thirty thousand, three hundred twenty-one".