56147705 has 4 divisors (see below), whose sum is σ = 67377252. Its totient is φ = 44918160.

The previous prime is 56147701. The next prime is 56147747. The reversal of 56147705 is 50774165.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5837056 + 50310649 = 2416^2 + 7093^2 .

It is not a de Polignac number, because 56147705 - 2² = 56147701 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56147701) 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 3 ways as a sum of consecutive naturals, for example, 5614766 + ... + 5614775.

It is an arithmetic number, because the mean of its divisors is an integer number (16844313).

Almost surely, 2^56147705 is an apocalyptic number.

It is an amenable number.

56147705 is a deficient number, since it is larger than the sum of its proper divisors (11229547).

56147705 is a wasteful number, since it uses less digits than its factorization.

56147705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11229546.

The product of its (nonzero) digits is 29400, while the sum is 35.

The square root of 56147705 is about 7493.1772299873. The cubic root of 56147705 is about 382.9223097059.

The spelling of 56147705 in words is "fifty-six million, one hundred forty-seven thousand, seven hundred five".