56617255187 has 2 divisors, whose sum is σ = 56617255188. Its totient is φ = 56617255186.

The previous prime is 56617255151. The next prime is 56617255213. The reversal of 56617255187 is 78155271665.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56617255187 - 2¹² = 56617251091 is a prime.

It is a super-3 number, since 3×56617255187³ (a number of 33 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (56617255117) 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 as a sum of consecutive naturals, namely, 28308627593 + 28308627594.

It is an arithmetic number, because the mean of its divisors is an integer number (28308627594).

Almost surely, 2^56617255187 is an apocalyptic number.

56617255187 is a deficient number, since it is larger than the sum of its proper divisors (1).

56617255187 is an equidigital number, since it uses as much as digits as its factorization.

56617255187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3528000, while the sum is 53.

The spelling of 56617255187 in words is "fifty-six billion, six hundred seventeen million, two hundred fifty-five thousand, one hundred eighty-seven".