56813547 has 16 divisors (see below), whose sum is σ = 87057152. Its totient is φ = 32283360.

The previous prime is 56813543. The next prime is 56813557. The reversal of 56813547 is 74531865.

It is not a de Polignac number, because 56813547 - 2² = 56813543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56813543) 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 15 ways as a sum of consecutive naturals, for example, 3673 + ... + 11274.

It is an arithmetic number, because the mean of its divisors is an integer number (5441072).

Almost surely, 2^56813547 is an apocalyptic number.

56813547 is a deficient number, since it is larger than the sum of its proper divisors (30243605).

56813547 is a wasteful number, since it uses less digits than its factorization.

56813547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15138.

The product of its digits is 100800, while the sum is 39.

The square root of 56813547 is about 7537.4761691166. The cubic root of 56813547 is about 384.4300263346.

The spelling of 56813547 in words is "fifty-six million, eight hundred thirteen thousand, five hundred forty-seven".