55477888 has 16 divisors (see below), whose sum is σ = 110522610. Its totient is φ = 27738880.

The previous prime is 55477871. The next prime is 55477897. The reversal of 55477888 is 88877455.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 55472704 + 5184 = 7448^2 + 72^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 216583 + ... + 216838.

Almost surely, 2^55477888 is an apocalyptic number.

It is an amenable number.

55477888 is a deficient number, since it is larger than the sum of its proper divisors (55044722).

55477888 is an equidigital number, since it uses as much as digits as its factorization.

55477888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433435 (or 433423 counting only the distinct ones).

The product of its digits is 2508800, while the sum is 52.

The square root of 55477888 is about 7448.3480047592. The cubic root of 55477888 is about 381.3935169436.

It can be divided in two parts, 55477 and 888, that added together give a palindrome (56365).

The spelling of 55477888 in words is "fifty-five million, four hundred seventy-seven thousand, eight hundred eighty-eight".