51118705 has 8 divisors (see below), whose sum is σ = 66919104. Its totient is φ = 37177200.

The previous prime is 51118703. The next prime is 51118723. The reversal of 51118705 is 50781115.

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

It is not a de Polignac number, because 51118705 - 2¹ = 51118703 is a prime.

It is a super-2 number, since 2×51118705² = 5226244001754050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51118703) 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, 464661 + ... + 464770.

It is an arithmetic number, because the mean of its divisors is an integer number (8364888).

Almost surely, 2^51118705 is an apocalyptic number.

51118705 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51118705 is a deficient number, since it is larger than the sum of its proper divisors (15800399).

51118705 is a wasteful number, since it uses less digits than its factorization.

51118705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929447.

The product of its (nonzero) digits is 1400, while the sum is 28.

The square root of 51118705 is about 7149.7346104593. The cubic root of 51118705 is about 371.1304723911.

The spelling of 51118705 in words is "fifty-one million, one hundred eighteen thousand, seven hundred five".