56506143 has 8 divisors (see below), whose sum is σ = 75545008. Its totient is φ = 37569024.

The previous prime is 56506127. The next prime is 56506169. The reversal of 56506143 is 34160565.

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

It is not a de Polignac number, because 56506143 - 2⁴ = 56506127 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56506143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56506103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24130 + ... + 26367.

It is an arithmetic number, because the mean of its divisors is an integer number (9443126).

Almost surely, 2^56506143 is an apocalyptic number.

56506143 is a deficient number, since it is larger than the sum of its proper divisors (19038865).

56506143 is a wasteful number, since it uses less digits than its factorization.

56506143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50873.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 56506143 is about 7517.0568043617. The cubic root of 56506143 is about 383.7354202286.

The spelling of 56506143 in words is "fifty-six million, five hundred six thousand, one hundred forty-three".