51124305211 has 4 divisors (see below), whose sum is σ = 58427777392. Its totient is φ = 43820833032.

The previous prime is 51124305203. The next prime is 51124305299. The reversal of 51124305211 is 11250342115.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11250342115 = 5 ⋅2250068423.

It is a cyclic number.

It is not a de Polignac number, because 51124305211 - 2³ = 51124305203 is a prime.

It is a super-2 number, since 2×51124305211² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51124305811) 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, 3651736080 + ... + 3651736093.

It is an arithmetic number, because the mean of its divisors is an integer number (14606944348).

Almost surely, 2^51124305211 is an apocalyptic number.

51124305211 is a deficient number, since it is larger than the sum of its proper divisors (7303472181).

51124305211 is an equidigital number, since it uses as much as digits as its factorization.

51124305211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7303472180.

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 51124305211 its reverse (11250342115), we get a palindrome (62374647326).

The spelling of 51124305211 in words is "fifty-one billion, one hundred twenty-four million, three hundred five thousand, two hundred eleven".