55505588 has 6 divisors (see below), whose sum is σ = 97134786. Its totient is φ = 27752792.

The previous prime is 55505581. The next prime is 55505591. The reversal of 55505588 is 88550555.

It can be written as a sum of positive squares in only one way, i.e., 55026724 + 478864 = 7418^2 + 692^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55505581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6938195 + ... + 6938202.

It is an arithmetic number, because the mean of its divisors is an integer number (16189131).

Almost surely, 2^55505588 is an apocalyptic number.

It is an amenable number.

55505588 is a deficient number, since it is larger than the sum of its proper divisors (41629198).

55505588 is a wasteful number, since it uses less digits than its factorization.

55505588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13876401 (or 13876399 counting only the distinct ones).

The product of its (nonzero) digits is 200000, while the sum is 41.

The square root of 55505588 is about 7450.2072454396. The cubic root of 55505588 is about 381.4569827254.

The spelling of 55505588 in words is "fifty-five million, five hundred five thousand, five hundred eighty-eight".