51447641 has 8 divisors (see below), whose sum is σ = 58853184. Its totient is φ = 44056080.

The previous prime is 51447629. The next prime is 51447647. The reversal of 51447641 is 14674415.

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 51447641 - 2¹⁴ = 51431257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51447598 and 51447607.

It is not an unprimeable number, because it can be changed into a prime (51447647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6191 + ... + 11883.

It is an arithmetic number, because the mean of its divisors is an integer number (7356648).

Almost surely, 2^51447641 is an apocalyptic number.

It is an amenable number.

51447641 is a deficient number, since it is larger than the sum of its proper divisors (7405543).

51447641 is a wasteful number, since it uses less digits than its factorization.

51447641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6991.

The product of its digits is 13440, while the sum is 32.

The square root of 51447641 is about 7172.7010951245. The cubic root of 51447641 is about 371.9248147471.

The spelling of 51447641 in words is "fifty-one million, four hundred forty-seven thousand, six hundred forty-one".