51163739 has 4 divisors (see below), whose sum is σ = 55815000. Its totient is φ = 46512480.

The previous prime is 51163703. The next prime is 51163741. The reversal of 51163739 is 93736115.

51163739 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51163739 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51163699 and 51163708.

It is not an unprimeable number, because it can be changed into a prime (51163759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2325614 + ... + 2325635.

It is an arithmetic number, because the mean of its divisors is an integer number (13953750).

Almost surely, 2^51163739 is an apocalyptic number.

51163739 is a deficient number, since it is larger than the sum of its proper divisors (4651261).

51163739 is a wasteful number, since it uses less digits than its factorization.

51163739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4651260.

The product of its digits is 17010, while the sum is 35.

The square root of 51163739 is about 7152.8832648101. The cubic root of 51163739 is about 371.2394252298.

The spelling of 51163739 in words is "fifty-one million, one hundred sixty-three thousand, seven hundred thirty-nine".