55577888 has 24 divisors (see below), whose sum is σ = 115179120. Its totient is φ = 26326080.

The previous prime is 55577861. The next prime is 55577897. The reversal of 55577888 is 88877555.

It is a happy number.

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45098 + ... + 46313.

It is an arithmetic number, because the mean of its divisors is an integer number (4799130).

Almost surely, 2^55577888 is an apocalyptic number.

It is an amenable number.

55577888 is an abundant number, since it is smaller than the sum of its proper divisors (59601232).

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

55577888 is a wasteful number, since it uses less digits than its factorization.

55577888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91440 (or 91432 counting only the distinct ones).

The product of its digits is 3136000, while the sum is 53.

The square root of 55577888 is about 7455.0578803923. The cubic root of 55577888 is about 381.6225358695.

It can be divided in two parts, 55577 and 888, that added together give a palindrome (56465).

The spelling of 55577888 in words is "fifty-five million, five hundred seventy-seven thousand, eight hundred eighty-eight".