51118079 has 4 divisors (see below), whose sum is σ = 51178176. Its totient is φ = 51057984.

The previous prime is 51118069. The next prime is 51118091. The reversal of 51118079 is 97081115.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51118079 - 2⁴ = 51118063 is a prime.

It is a super-2 number, since 2×51118079² = 5226116001300482, 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 (51118049) 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, 28754 + ... + 30479.

It is an arithmetic number, because the mean of its divisors is an integer number (12794544).

Almost surely, 2^51118079 is an apocalyptic number.

51118079 is a deficient number, since it is larger than the sum of its proper divisors (60097).

51118079 is an equidigital number, since it uses as much as digits as its factorization.

51118079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60096.

The product of its (nonzero) digits is 2520, while the sum is 32.

The square root of 51118079 is about 7149.6908324766. The cubic root of 51118079 is about 371.1289574295.

The spelling of 51118079 in words is "fifty-one million, one hundred eighteen thousand, seventy-nine".