55112729 has 8 divisors (see below), whose sum is σ = 63040320. Its totient is φ = 47198736.

The previous prime is 55112719. The next prime is 55112741. The reversal of 55112729 is 92721155.

It is a happy number.

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 55112729 - 2²⁴ = 38335513 is a prime.

It is a super-3 number, since 3×55112729³ (a number of 24 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55112695 and 55112704.

It is not an unprimeable number, because it can be changed into a prime (55112719) 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, 7727 + ... + 13035.

It is an arithmetic number, because the mean of its divisors is an integer number (7880040).

Almost surely, 2^55112729 is an apocalyptic number.

It is an amenable number.

55112729 is a deficient number, since it is larger than the sum of its proper divisors (7927591).

55112729 is a wasteful number, since it uses less digits than its factorization.

55112729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6799.

The product of its digits is 6300, while the sum is 32.

The square root of 55112729 is about 7423.7947843404. The cubic root of 55112729 is about 380.5548887843.

The spelling of 55112729 in words is "fifty-five million, one hundred twelve thousand, seven hundred twenty-nine".