51127813 has 8 divisors (see below), whose sum is σ = 56540736. Its totient is φ = 45842400.

The previous prime is 51127801. The next prime is 51127877. The reversal of 51127813 is 31872115.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51127813 is a prime.

It is a super-2 number, since 2×51127813² = 5228106524325938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51127913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31033 + ... + 32638.

It is an arithmetic number, because the mean of its divisors is an integer number (7067592).

Almost surely, 2^51127813 is an apocalyptic number.

It is an amenable number.

51127813 is a deficient number, since it is larger than the sum of its proper divisors (5412923).

51127813 is a wasteful number, since it uses less digits than its factorization.

51127813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63755.

The product of its digits is 1680, while the sum is 28.

The square root of 51127813 is about 7150.3715288088. The cubic root of 51127813 is about 371.1525129573.

Adding to 51127813 its reverse (31872115), we get a palindrome (82999928).

The spelling of 51127813 in words is "fifty-one million, one hundred twenty-seven thousand, eight hundred thirteen".