51013012 has 6 divisors (see below), whose sum is σ = 89272778. Its totient is φ = 25506504.

The previous prime is 51012961. The next prime is 51013033. The reversal of 51013012 is 21031015.

It can be written as a sum of positive squares in only one way, i.e., 46867716 + 4145296 = 6846^2 + 2036^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51012983 and 51013001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6376623 + ... + 6376630.

Almost surely, 2^51013012 is an apocalyptic number.

It is an amenable number.

51013012 is a deficient number, since it is larger than the sum of its proper divisors (38259766).

51013012 is a wasteful number, since it uses less digits than its factorization.

51013012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12753257 (or 12753255 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 51013012 is about 7142.3393926640. The cubic root of 51013012 is about 370.8745128645.

Adding to 51013012 its reverse (21031015), we get a palindrome (72044027).

The spelling of 51013012 in words is "fifty-one million, thirteen thousand, twelve".