55271563 has 4 divisors (see below), whose sum is σ = 55296648. Its totient is φ = 55246480.

The previous prime is 55271521. The next prime is 55271569. The reversal of 55271563 is 36517255.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36517255 = 5 ⋅7303451.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55271563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55271569) 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, 8881 + ... + 13762.

It is an arithmetic number, because the mean of its divisors is an integer number (13824162).

Almost surely, 2^55271563 is an apocalyptic number.

55271563 is a deficient number, since it is larger than the sum of its proper divisors (25085).

55271563 is a wasteful number, since it uses less digits than its factorization.

55271563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25084.

The product of its digits is 31500, while the sum is 34.

The square root of 55271563 is about 7434.4847165086. The cubic root of 55271563 is about 380.9201225024.

The spelling of 55271563 in words is "fifty-five million, two hundred seventy-one thousand, five hundred sixty-three".