27555278053 has 4 divisors (see below), whose sum is σ = 29176176780. Its totient is φ = 25934379328.

The previous prime is 27555278039. The next prime is 27555278057. The reversal of 27555278053 is 35087255572.

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

It can be written as a sum of positive squares in 2 ways, for example, as 17349631524 + 10205646529 = 131718^2 + 101023^2 .

It is a cyclic number.

It is not a de Polignac number, because 27555278053 - 2⁵ = 27555278021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27555277988 and 27555278006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27555278057) 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, 810449338 + ... + 810449371.

It is an arithmetic number, because the mean of its divisors is an integer number (7294044195).

Almost surely, 2^27555278053 is an apocalyptic number.

It is an amenable number.

27555278053 is a deficient number, since it is larger than the sum of its proper divisors (1620898727).

27555278053 is a wasteful number, since it uses less digits than its factorization.

27555278053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1620898726.

The product of its (nonzero) digits is 2940000, while the sum is 49.

The spelling of 27555278053 in words is "twenty-seven billion, five hundred fifty-five million, two hundred seventy-eight thousand, fifty-three".