51489713 has 8 divisors (see below), whose sum is σ = 57123360. Its totient is φ = 46014880.

The previous prime is 51489689. The next prime is 51489721. The reversal of 51489713 is 31798415.

51489713 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 51489713 - 2⁶ = 51489649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51489743) 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 7 ways as a sum of consecutive naturals, for example, 39020 + ... + 40317.

It is an arithmetic number, because the mean of its divisors is an integer number (7140420).

Almost surely, 2^51489713 is an apocalyptic number.

It is an amenable number.

51489713 is a deficient number, since it is larger than the sum of its proper divisors (5633647).

51489713 is a wasteful number, since it uses less digits than its factorization.

51489713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79407.

The product of its digits is 30240, while the sum is 38.

The square root of 51489713 is about 7175.6332821571. The cubic root of 51489713 is about 372.0261692963.

The spelling of 51489713 in words is "fifty-one million, four hundred eighty-nine thousand, seven hundred thirteen".