55385588 has 18 divisors (see below), whose sum is σ = 99358518. Its totient is φ = 27014080.

The previous prime is 55385579. The next prime is 55385593. The reversal of 55385588 is 88558355.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 595984 + 54789604 = 772^2 + 7402^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2606 + ... + 10842.

Almost surely, 2^55385588 is an apocalyptic number.

It is an amenable number.

55385588 is a deficient number, since it is larger than the sum of its proper divisors (43972930).

55385588 is a wasteful number, since it uses less digits than its factorization.

55385588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8323 (or 8280 counting only the distinct ones).

The product of its digits is 960000, while the sum is 47.

The square root of 55385588 is about 7442.1494206983. The cubic root of 55385588 is about 381.1818881100.

The spelling of 55385588 in words is "fifty-five million, three hundred eighty-five thousand, five hundred eighty-eight".