56521150573 has 4 divisors (see below), whose sum is σ = 56557406880. Its totient is φ = 56484894268.

The previous prime is 56521150547. The next prime is 56521150583. The reversal of 56521150573 is 37505112565.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56521150573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56521150513) 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, 18125815 + ... + 18128932.

It is an arithmetic number, because the mean of its divisors is an integer number (14139351720).

Almost surely, 2^56521150573 is an apocalyptic number.

It is an amenable number.

56521150573 is a deficient number, since it is larger than the sum of its proper divisors (36256307).

56521150573 is a wasteful number, since it uses less digits than its factorization.

56521150573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36256306.

The product of its (nonzero) digits is 157500, while the sum is 40.

The spelling of 56521150573 in words is "fifty-six billion, five hundred twenty-one million, one hundred fifty thousand, five hundred seventy-three".