55067729 has 8 divisors (see below), whose sum is σ = 56781120. Its totient is φ = 53366256.

The previous prime is 55067717. The next prime is 55067731. The reversal of 55067729 is 92776055.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55067729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55067329) 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, 6902 + ... + 12560.

It is an arithmetic number, because the mean of its divisors is an integer number (7097640).

Almost surely, 2^55067729 is an apocalyptic number.

It is an amenable number.

55067729 is a deficient number, since it is larger than the sum of its proper divisors (1713391).

55067729 is a wasteful number, since it uses less digits than its factorization.

55067729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5959.

The product of its (nonzero) digits is 132300, while the sum is 41.

The square root of 55067729 is about 7420.7633704357. The cubic root of 55067729 is about 380.4512851746.

The spelling of 55067729 in words is "fifty-five million, sixty-seven thousand, seven hundred twenty-nine".