51113718 has 24 divisors (see below), whose sum is σ = 114566400. Its totient is φ = 16450224.

The previous prime is 51113717. The next prime is 51113719. The reversal of 51113718 is 81731115.

51113718 is a `hidden beast` number, since 511 + 137 + 18 = 666.

It is an interprime number because it is at equal distance from previous prime (51113717) and next prime (51113719).

It is a super-2 number, since 2×51113718² = 5225224335567048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51113691 and 51113700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51113717) 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 11 ways as a sum of consecutive naturals, for example, 48438 + ... + 49481.

It is an arithmetic number, because the mean of its divisors is an integer number (4773600).

Almost surely, 2^51113718 is an apocalyptic number.

51113718 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

51113718 is an abundant number, since it is smaller than the sum of its proper divisors (63452682).

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

51113718 is a wasteful number, since it uses less digits than its factorization.

51113718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97956 (or 97953 counting only the distinct ones).

The product of its digits is 840, while the sum is 27.

The square root of 51113718 is about 7149.3858477494. The cubic root of 51113718 is about 371.1184031765.

The spelling of 51113718 in words is "fifty-one million, one hundred thirteen thousand, seven hundred eighteen".