55656771 has 16 divisors (see below), whose sum is σ = 77525760. Its totient is φ = 35471520.

The previous prime is 55656763. The next prime is 55656841. The reversal of 55656771 is 17765655.

It is not a de Polignac number, because 55656771 - 2³ = 55656763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55656701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5856 + ... + 12066.

It is an arithmetic number, because the mean of its divisors is an integer number (4845360).

Almost surely, 2^55656771 is an apocalyptic number.

55656771 is a deficient number, since it is larger than the sum of its proper divisors (21868989).

55656771 is a wasteful number, since it uses less digits than its factorization.

55656771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6346.

The product of its digits is 220500, while the sum is 42.

The square root of 55656771 is about 7460.3465737189. The cubic root of 55656771 is about 381.8029991231.

The spelling of 55656771 in words is "fifty-five million, six hundred fifty-six thousand, seven hundred seventy-one".