51115837 has 8 divisors (see below), whose sum is σ = 52448256. Its totient is φ = 49793712.

The previous prime is 51115829. The next prime is 51115847. The reversal of 51115837 is 73851115.

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

It is a cyclic number.

It is not a de Polignac number, because 51115837 - 2³ = 51115829 is a prime.

It is a super-2 number, since 2×51115837² = 5225657584421138, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51115799 and 51115808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51115847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8043 + ... + 12919.

It is an arithmetic number, because the mean of its divisors is an integer number (6556032).

Almost surely, 2^51115837 is an apocalyptic number.

It is an amenable number.

51115837 is a deficient number, since it is larger than the sum of its proper divisors (1332419).

51115837 is a wasteful number, since it uses less digits than its factorization.

51115837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5147.

The product of its digits is 4200, while the sum is 31.

The square root of 51115837 is about 7149.5340407610. The cubic root of 51115837 is about 371.1235315390.

The spelling of 51115837 in words is "fifty-one million, one hundred fifteen thousand, eight hundred thirty-seven".