56124561 has 4 divisors (see below), whose sum is σ = 74832752. Its totient is φ = 37416372.

The previous prime is 56124559. The next prime is 56124569. The reversal of 56124561 is 16542165.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 56124561 - 2¹ = 56124559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56124569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9354091 + ... + 9354096.

It is an arithmetic number, because the mean of its divisors is an integer number (18708188).

Almost surely, 2^56124561 is an apocalyptic number.

It is an amenable number.

56124561 is a deficient number, since it is larger than the sum of its proper divisors (18708191).

56124561 is a wasteful number, since it uses less digits than its factorization.

56124561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18708190.

The product of its digits is 7200, while the sum is 30.

The square root of 56124561 is about 7491.6327325891. The cubic root of 56124561 is about 382.8696891408.

The spelling of 56124561 in words is "fifty-six million, one hundred twenty-four thousand, five hundred sixty-one".