51544009 has 8 divisors (see below), whose sum is σ = 56290752. Its totient is φ = 46807440.

The previous prime is 51543967. The next prime is 51544013. The reversal of 51544009 is 90044515.

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 51544009 - 2⁹ = 51543497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51544039) 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, 11412 + ... + 15274.

It is an arithmetic number, because the mean of its divisors is an integer number (7036344).

Almost surely, 2^51544009 is an apocalyptic number.

It is an amenable number.

51544009 is a deficient number, since it is larger than the sum of its proper divisors (4746743).

51544009 is a wasteful number, since it uses less digits than its factorization.

51544009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5087.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 51544009 is about 7179.4156447444. The cubic root of 51544009 is about 372.1568907921.

The spelling of 51544009 in words is "fifty-one million, five hundred forty-four thousand, nine".