51315000273 has 6 divisors (see below), whose sum is σ = 74121667074. Its totient is φ = 34210000176.

The previous prime is 51315000251. The next prime is 51315000353. The reversal of 51315000273 is 37200051315.

51315000273 is a `hidden beast` number, since 5 + 131 + 500 + 0 + 27 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 26731269009 + 24583731264 = 163497^2 + 156792^2 .

It is not a de Polignac number, because 51315000273 - 2¹⁷ = 51314869201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51315000223) 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, 2850833340 + ... + 2850833357.

It is an arithmetic number, because the mean of its divisors is an integer number (12353611179).

Almost surely, 2^51315000273 is an apocalyptic number.

It is an amenable number.

51315000273 is a deficient number, since it is larger than the sum of its proper divisors (22806666801).

51315000273 is a wasteful number, since it uses less digits than its factorization.

51315000273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5701666703 (or 5701666700 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 27.

Adding to 51315000273 its reverse (37200051315), we get a palindrome (88515051588).

The spelling of 51315000273 in words is "fifty-one billion, three hundred fifteen million, two hundred seventy-three", and thus it is an aban number.