56205071551 has 8 divisors (see below), whose sum is σ = 56980501424. Its totient is φ = 55429790400.

The previous prime is 56205071471. The next prime is 56205071581. The reversal of 56205071551 is 15517050265.

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

It is a cyclic number.

It is not a de Polignac number, because 56205071551 - 2²⁹ = 55668200639 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56205071551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56205071581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 878005 + ... + 939841.

It is an arithmetic number, because the mean of its divisors is an integer number (7122562678).

Almost surely, 2^56205071551 is an apocalyptic number.

56205071551 is a deficient number, since it is larger than the sum of its proper divisors (775429873).

56205071551 is a wasteful number, since it uses less digits than its factorization.

56205071551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74361.

The product of its (nonzero) digits is 52500, while the sum is 37.

The spelling of 56205071551 in words is "fifty-six billion, two hundred five million, seventy-one thousand, five hundred fifty-one".