55739009 has 8 divisors (see below), whose sum is σ = 56597760. Its totient is φ = 54885600.

The previous prime is 55738999. The next prime is 55739029. The reversal of 55739009 is 90093755.

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 55739009 - 2⁴ = 55738993 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55739029) 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, 22964 + ... + 25274.

It is an arithmetic number, because the mean of its divisors is an integer number (7074720).

Almost surely, 2^55739009 is an apocalyptic number.

It is an amenable number.

55739009 is a deficient number, since it is larger than the sum of its proper divisors (858751).

55739009 is a wasteful number, since it uses less digits than its factorization.

55739009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2671.

The product of its (nonzero) digits is 42525, while the sum is 38.

The square root of 55739009 is about 7465.8562134560. The cubic root of 55739009 is about 381.9909562655.

The spelling of 55739009 in words is "fifty-five million, seven hundred thirty-nine thousand, nine".