56741234521 has 4 divisors (see below), whose sum is σ = 56741789412. Its totient is φ = 56740679632.

The previous prime is 56741234519. The next prime is 56741234549. The reversal of 56741234521 is 12543214765.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 27294674521 + 29446560000 = 165211^2 + 171600^2 .

It is a cyclic number.

It is not a de Polignac number, because 56741234521 - 2¹ = 56741234519 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56741235521) 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, 74650 + ... + 345043.

It is an arithmetic number, because the mean of its divisors is an integer number (14185447353).

Almost surely, 2^56741234521 is an apocalyptic number.

It is an amenable number.

56741234521 is a deficient number, since it is larger than the sum of its proper divisors (554891).

56741234521 is a wasteful number, since it uses less digits than its factorization.

56741234521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554890.

The product of its digits is 201600, while the sum is 40.

The spelling of 56741234521 in words is "fifty-six billion, seven hundred forty-one million, two hundred thirty-four thousand, five hundred twenty-one".