51144050251 has 4 divisors (see below), whose sum is σ = 58450343152. Its totient is φ = 43837757352.

The previous prime is 51144050227. The next prime is 51144050267. The reversal of 51144050251 is 15205044115.

51144050251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 51144050251 - 2⁹ = 51144049739 is a prime.

It is a super-3 number, since 3×51144050251³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51144050281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3653146440 + ... + 3653146453.

It is an arithmetic number, because the mean of its divisors is an integer number (14612585788).

Almost surely, 2^51144050251 is an apocalyptic number.

51144050251 is a deficient number, since it is larger than the sum of its proper divisors (7306292901).

51144050251 is an equidigital number, since it uses as much as digits as its factorization.

51144050251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7306292900.

The product of its (nonzero) digits is 4000, while the sum is 28.

Adding to 51144050251 its reverse (15205044115), we get a palindrome (66349094366).

The spelling of 51144050251 in words is "fifty-one billion, one hundred forty-four million, fifty thousand, two hundred fifty-one".