55565688 has 16 divisors (see below), whose sum is σ = 138914280. Its totient is φ = 18521888.

The previous prime is 55565687. The next prime is 55565689. The reversal of 55565688 is 88656555.

It is an interprime number because it is at equal distance from previous prime (55565687) and next prime (55565689).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55565687) 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 in 3 ways as a sum of consecutive naturals, for example, 1157595 + ... + 1157642.

Almost surely, 2^55565688 is an apocalyptic number.

It is an amenable number.

55565688 is an abundant number, since it is smaller than the sum of its proper divisors (83348592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55565688 is a wasteful number, since it uses less digits than its factorization.

55565688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2315246 (or 2315242 counting only the distinct ones).

The product of its digits is 1440000, while the sum is 48.

The square root of 55565688 is about 7454.2395990470. The cubic root of 55565688 is about 381.5946102812.

The spelling of 55565688 in words is "fifty-five million, five hundred sixty-five thousand, six hundred eighty-eight".