30550253251 has 4 divisors (see below), whose sum is σ = 34914575152. Its totient is φ = 26185931352.

The previous prime is 30550253249. The next prime is 30550253323. The reversal of 30550253251 is 15235205503.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 30550253251 - 2¹ = 30550253249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30550253221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2182160940 + ... + 2182160953.

It is an arithmetic number, because the mean of its divisors is an integer number (8728643788).

Almost surely, 2^30550253251 is an apocalyptic number.

30550253251 is a deficient number, since it is larger than the sum of its proper divisors (4364321901).

30550253251 is an equidigital number, since it uses as much as digits as its factorization.

30550253251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4364321900.

The product of its (nonzero) digits is 22500, while the sum is 31.

Adding to 30550253251 its reverse (15235205503), we get a palindrome (45785458754).

The spelling of 30550253251 in words is "thirty billion, five hundred fifty million, two hundred fifty-three thousand, two hundred fifty-one".