51303749481 has 6 divisors (see below), whose sum is σ = 74105415930. Its totient is φ = 34202499648.

The previous prime is 51303749459. The next prime is 51303749503. The reversal of 51303749481 is 18494730315.

51303749481 is a `hidden beast` number, since 5 + 130 + 37 + 4 + 9 + 481 = 666.

It is an interprime number because it is at equal distance from previous prime (51303749459) and next prime (51303749503).

It can be written as a sum of positive squares in only one way, i.e., 46429475625 + 4874273856 = 215475^2 + 69816^2 .

It is not a de Polignac number, because 51303749481 - 2⁵ = 51303749449 is a prime.

It is a super-2 number, since 2×51303749481² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51303749411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2850208296 + ... + 2850208313.

It is an arithmetic number, because the mean of its divisors is an integer number (12350902655).

Almost surely, 2^51303749481 is an apocalyptic number.

It is an amenable number.

51303749481 is a deficient number, since it is larger than the sum of its proper divisors (22801666449).

51303749481 is a wasteful number, since it uses less digits than its factorization.

51303749481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5700416615 (or 5700416612 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 51303749481 in words is "fifty-one billion, three hundred three million, seven hundred forty-nine thousand, four hundred eighty-one".