56055055004987 has 4 divisors (see below), whose sum is σ = 56055194418840. Its totient is φ = 56054915591136.

The previous prime is 56055055004981. The next prime is 56055055004999. The reversal of 56055055004987 is 78940055055065.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56055055004987 - 2²² = 56055050810683 is a prime.

It is a super-2 number, since 2×56055055004987² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56055055004981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69102062 + ... + 69908547.

It is an arithmetic number, because the mean of its divisors is an integer number (14013798604710).

Almost surely, 2^{56055055004987} is an apocalyptic number.

56055055004987 is a deficient number, since it is larger than the sum of its proper divisors (139413853).

56055055004987 is a wasteful number, since it uses less digits than its factorization.

56055055004987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139413852.

The product of its (nonzero) digits is 37800000, while the sum is 59.

The spelling of 56055055004987 in words is "fifty-six trillion, fifty-five billion, fifty-five million, four thousand, nine hundred eighty-seven".