56181543 has 16 divisors (see below), whose sum is σ = 82473600. Its totient is φ = 33734880.

The previous prime is 56181539. The next prime is 56181547. The reversal of 56181543 is 34518165.

56181543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (56181539) and next prime (56181547).

It is not a de Polignac number, because 56181543 - 2² = 56181539 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56181547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4213 + ... + 11406.

It is an arithmetic number, because the mean of its divisors is an integer number (5154600).

Almost surely, 2^56181543 is an apocalyptic number.

56181543 is a deficient number, since it is larger than the sum of its proper divisors (26292057).

56181543 is a wasteful number, since it uses less digits than its factorization.

56181543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15742.

The product of its digits is 14400, while the sum is 33.

The square root of 56181543 is about 7495.4348106031. The cubic root of 56181543 is about 382.9992182993. Note that the first 3 decimals are identical.

The spelling of 56181543 in words is "fifty-six million, one hundred eighty-one thousand, five hundred forty-three".