56204264561 has 8 divisors (see below), whose sum is σ = 57650789448. Its totient is φ = 54761344000.

The previous prime is 56204264509. The next prime is 56204264569. The reversal of 56204264561 is 16546240265.

It can be written as a sum of positive squares in 4 ways, for example, as 11701830625 + 44502433936 = 108175^2 + 210956^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56204264561 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56204264569) 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 7 ways as a sum of consecutive naturals, for example, 869480 + ... + 931881.

It is an arithmetic number, because the mean of its divisors is an integer number (7206348681).

Almost surely, 2^56204264561 is an apocalyptic number.

It is an amenable number.

56204264561 is a deficient number, since it is larger than the sum of its proper divisors (1446524887).

56204264561 is a wasteful number, since it uses less digits than its factorization.

56204264561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1802163.

The product of its (nonzero) digits is 345600, while the sum is 41.

The spelling of 56204264561 in words is "fifty-six billion, two hundred four million, two hundred sixty-four thousand, five hundred sixty-one".