51130712 has 16 divisors (see below), whose sum is σ = 99176400. Its totient is φ = 24683680.

The previous prime is 51130711. The next prime is 51130727. The reversal of 51130712 is 21703115.

It is a super-2 number, since 2×51130712² = 5228699419253888, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51130711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109964 + ... + 110427.

It is an arithmetic number, because the mean of its divisors is an integer number (6198525).

Almost surely, 2^51130712 is an apocalyptic number.

It is an amenable number.

51130712 is a deficient number, since it is larger than the sum of its proper divisors (48045688).

51130712 is a wasteful number, since it uses less digits than its factorization.

51130712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220426 (or 220422 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 51130712 is about 7150.5742426745. The cubic root of 51130712 is about 371.1595277354.

Adding to 51130712 its reverse (21703115), we get a palindrome (72833827).

The spelling of 51130712 in words is "fifty-one million, one hundred thirty thousand, seven hundred twelve".