51768039 has 8 divisors (see below), whose sum is σ = 69057792. Its totient is φ = 34495160.

The previous prime is 51768029. The next prime is 51768061. The reversal of 51768039 is 93086715.

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 51768039 - 2¹¹ = 51765991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51767988 and 51768006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51768029) 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, 8002 + ... + 12944.

It is an arithmetic number, because the mean of its divisors is an integer number (8632224).

Almost surely, 2^51768039 is an apocalyptic number.

51768039 is a deficient number, since it is larger than the sum of its proper divisors (17289753).

51768039 is a wasteful number, since it uses less digits than its factorization.

51768039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8437.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 51768039 is about 7195.0009728978. Note that the first 3 decimals coincide. The cubic root of 51768039 is about 372.6952902974.

The spelling of 51768039 in words is "fifty-one million, seven hundred sixty-eight thousand, thirty-nine".