56521087633 has 8 divisors (see below), whose sum is σ = 57909912480. Its totient is φ = 55132751520.

The previous prime is 56521087607. The next prime is 56521087643. The reversal of 56521087633 is 33678012565.

56521087633 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-56521087633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56521087643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117666 + ... + 356212.

It is an arithmetic number, because the mean of its divisors is an integer number (7238739060).

Almost surely, 2^56521087633 is an apocalyptic number.

It is an amenable number.

56521087633 is a deficient number, since it is larger than the sum of its proper divisors (1388824847).

56521087633 is a wasteful number, since it uses less digits than its factorization.

56521087633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244367.

The product of its (nonzero) digits is 907200, while the sum is 46.

The spelling of 56521087633 in words is "fifty-six billion, five hundred twenty-one million, eighty-seven thousand, six hundred thirty-three".