55728167 has 8 divisors (see below), whose sum is σ = 60896640. Its totient is φ = 50576760.

The previous prime is 55728163. The next prime is 55728181. The reversal of 55728167 is 76182755.

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 55728167 - 2² = 55728163 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55728161) 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, 3134 + ... + 11012.

It is an arithmetic number, because the mean of its divisors is an integer number (7612080).

Almost surely, 2^55728167 is an apocalyptic number.

55728167 is a deficient number, since it is larger than the sum of its proper divisors (5168473).

55728167 is a wasteful number, since it uses less digits than its factorization.

55728167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8533.

The product of its digits is 117600, while the sum is 41.

The square root of 55728167 is about 7465.1300725439. The cubic root of 55728167 is about 381.9661871701.

The spelling of 55728167 in words is "fifty-five million, seven hundred twenty-eight thousand, one hundred sixty-seven".