56551543 has 4 divisors (see below), whose sum is σ = 59527960. Its totient is φ = 53575128.

The previous prime is 56551529. The next prime is 56551553. The reversal of 56551543 is 34515565.

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 56551543 - 2⁵ = 56551511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56551499 and 56551508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56551513) 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, 1488180 + ... + 1488217.

It is an arithmetic number, because the mean of its divisors is an integer number (14881990).

Almost surely, 2^56551543 is an apocalyptic number.

56551543 is a deficient number, since it is larger than the sum of its proper divisors (2976417).

56551543 is a wasteful number, since it uses less digits than its factorization.

56551543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2976416.

The product of its digits is 45000, while the sum is 34.

The square root of 56551543 is about 7520.0759969564. The cubic root of 56551543 is about 383.8381637737.

The spelling of 56551543 in words is "fifty-six million, five hundred fifty-one thousand, five hundred forty-three".