51127872 has 28 divisors (see below), whose sum is σ = 135276336. Its totient is φ = 17042560.

The previous prime is 51127801. The next prime is 51127877. The reversal of 51127872 is 27872115.

It is a super-2 number, since 2×51127872² = 5228118590496768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51127877) 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, 132954 + ... + 133337.

Almost surely, 2^51127872 is an apocalyptic number.

It is an amenable number.

51127872 is an abundant number, since it is smaller than the sum of its proper divisors (84148464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51127872 is a wasteful number, since it uses less digits than its factorization.

51127872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266306 (or 266296 counting only the distinct ones).

The product of its digits is 7840, while the sum is 33.

The square root of 51127872 is about 7150.3756544674. The cubic root of 51127872 is about 371.1526557236.

Adding to 51127872 its reverse (27872115), we get a palindrome (78999987).

The spelling of 51127872 in words is "fifty-one million, one hundred twenty-seven thousand, eight hundred seventy-two".