51143012 has 6 divisors (see below), whose sum is σ = 89500278. Its totient is φ = 25571504.

The previous prime is 51143011. The next prime is 51143033. The reversal of 51143012 is 21034115.

It can be written as a sum of positive squares in only one way, i.e., 51036736 + 106276 = 7144^2 + 326^2 .

It is a super-3 number, since 3×51143012³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (51143011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6392873 + ... + 6392880.

It is an arithmetic number, because the mean of its divisors is an integer number (14916713).

Almost surely, 2^51143012 is an apocalyptic number.

It is an amenable number.

51143012 is a deficient number, since it is larger than the sum of its proper divisors (38357266).

51143012 is a wasteful number, since it uses less digits than its factorization.

51143012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12785757 (or 12785755 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 51143012 is about 7151.4342617408. The cubic root of 51143012 is about 371.1892873847.

Adding to 51143012 its reverse (21034115), we get a palindrome (72177127).

The spelling of 51143012 in words is "fifty-one million, one hundred forty-three thousand, twelve".