56728159 has 8 divisors (see below), whose sum is σ = 57195072. Its totient is φ = 56263680.

The previous prime is 56728153. The next prime is 56728169. The reversal of 56728159 is 95182765.

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 56728159 - 2⁵ = 56728127 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 (56728153) 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, 95367 + ... + 95959.

It is an arithmetic number, because the mean of its divisors is an integer number (7149384).

Almost surely, 2^56728159 is an apocalyptic number.

56728159 is a deficient number, since it is larger than the sum of its proper divisors (466913).

56728159 is a wasteful number, since it uses less digits than its factorization.

56728159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1217.

The product of its digits is 151200, while the sum is 43.

The square root of 56728159 is about 7531.8098090698. The cubic root of 56728159 is about 384.2373365525.

It can be divided in two parts, 5672 and 8159, that added together give a palindrome (13831).

The spelling of 56728159 in words is "fifty-six million, seven hundred twenty-eight thousand, one hundred fifty-nine".