51738447 has 8 divisors (see below), whose sum is σ = 69018544. Its totient is φ = 34475328.

The previous prime is 51738439. The next prime is 51738451. The reversal of 51738447 is 74483715.

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

It is not a de Polignac number, because 51738447 - 2³ = 51738439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51738347) 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, 7563 + ... + 12675.

It is an arithmetic number, because the mean of its divisors is an integer number (8627318).

Almost surely, 2^51738447 is an apocalyptic number.

51738447 is a deficient number, since it is larger than the sum of its proper divisors (17280097).

51738447 is a wasteful number, since it uses less digits than its factorization.

51738447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8489.

The product of its digits is 94080, while the sum is 39.

The square root of 51738447 is about 7192.9442511394. The cubic root of 51738447 is about 372.6242625529.

The spelling of 51738447 in words is "fifty-one million, seven hundred thirty-eight thousand, four hundred forty-seven".