56105047 has 4 divisors (see below), whose sum is σ = 57056040. Its totient is φ = 55154056.

The previous prime is 56105039. The next prime is 56105051. The reversal of 56105047 is 74050165.

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

It is a cyclic number.

It is not a de Polignac number, because 56105047 - 2³ = 56105039 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 (56105017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 475408 + ... + 475525.

It is an arithmetic number, because the mean of its divisors is an integer number (14264010).

Almost surely, 2^56105047 is an apocalyptic number.

56105047 is a deficient number, since it is larger than the sum of its proper divisors (950993).

56105047 is an equidigital number, since it uses as much as digits as its factorization.

56105047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950992.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 56105047 is about 7490.3302330405. The cubic root of 56105047 is about 382.8253105595.

The spelling of 56105047 in words is "fifty-six million, one hundred five thousand, forty-seven".