51313400441 has 4 divisors (see below), whose sum is σ = 51498647652. Its totient is φ = 51128153232.

The previous prime is 51313400431. The next prime is 51313400443. The reversal of 51313400441 is 14400431315.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7201219600 + 44112180841 = 84860^2 + 210029^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51313400441 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51313400441.

It is not an unprimeable number, because it can be changed into a prime (51313400443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92623190 + ... + 92623743.

It is an arithmetic number, because the mean of its divisors is an integer number (12874661913).

Almost surely, 2^51313400441 is an apocalyptic number.

It is an amenable number.

51313400441 is a deficient number, since it is larger than the sum of its proper divisors (185247211).

51313400441 is a wasteful number, since it uses less digits than its factorization.

51313400441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185247210.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 51313400441 its reverse (14400431315), we get a palindrome (65713831756).

The spelling of 51313400441 in words is "fifty-one billion, three hundred thirteen million, four hundred thousand, four hundred forty-one".