55655887 has 8 divisors (see below), whose sum is σ = 63798176. Its totient is φ = 47561472.

The previous prime is 55655867. The next prime is 55655891. The reversal of 55655887 is 78855655.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55655887 - 2⁷ = 55655759 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55655887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55655867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9438 + ... + 14155.

It is an arithmetic number, because the mean of its divisors is an integer number (7974772).

Almost surely, 2^55655887 is an apocalyptic number.

55655887 is a deficient number, since it is larger than the sum of its proper divisors (8142289).

55655887 is a wasteful number, since it uses less digits than its factorization.

55655887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23937.

The product of its digits is 1680000, while the sum is 49.

The square root of 55655887 is about 7460.2873269064. The cubic root of 55655887 is about 381.8009777121.

The spelling of 55655887 in words is "fifty-five million, six hundred fifty-five thousand, eight hundred eighty-seven".