51947349 has 8 divisors (see below), whose sum is σ = 72908640. Its totient is φ = 32808816.

The previous prime is 51947339. The next prime is 51947353. The reversal of 51947349 is 94374915.

51947349 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 not a de Polignac number, because 51947349 - 2⁴ = 51947333 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 51947349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51947339) 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, 455622 + ... + 455735.

It is an arithmetic number, because the mean of its divisors is an integer number (9113580).

Almost surely, 2^51947349 is an apocalyptic number.

It is an amenable number.

51947349 is a deficient number, since it is larger than the sum of its proper divisors (20961291).

51947349 is a wasteful number, since it uses less digits than its factorization.

51947349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911379.

The product of its digits is 136080, while the sum is 42.

The square root of 51947349 is about 7207.4509363575. The cubic root of 51947349 is about 373.1250984964.

The spelling of 51947349 in words is "fifty-one million, nine hundred forty-seven thousand, three hundred forty-nine".