55309687227 has 12 divisors (see below), whose sum is σ = 79911342784. Its totient is φ = 36864091440.

The previous prime is 55309687219. The next prime is 55309687259. The reversal of 55309687227 is 72278690355.

55309687227 is a `hidden beast` number, since 5 + 530 + 9 + 6 + 87 + 2 + 27 = 666.

It is not a de Polignac number, because 55309687227 - 2³ = 55309687219 is a prime.

It is a super-2 number, since 2×55309687227² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55309687127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 713899 + ... + 787572.

Almost surely, 2^55309687227 is an apocalyptic number.

55309687227 is a deficient number, since it is larger than the sum of its proper divisors (24601655557).

55309687227 is a wasteful number, since it uses less digits than its factorization.

55309687227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505570 (or 1505567 counting only the distinct ones).

The product of its (nonzero) digits is 6350400, while the sum is 54.

The spelling of 55309687227 in words is "fifty-five billion, three hundred nine million, six hundred eighty-seven thousand, two hundred twenty-seven".