55635550 has 48 divisors (see below), whose sum is σ = 107292240. Its totient is φ = 21450240.

The previous prime is 55635521. The next prime is 55635581. The reversal of 55635550 is 5553655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 242836 + ... + 243064.

It is an arithmetic number, because the mean of its divisors is an integer number (2235255).

Almost surely, 2^55635550 is an apocalyptic number.

55635550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55635550 is a deficient number, since it is larger than the sum of its proper divisors (51656690).

55635550 is a wasteful number, since it uses less digits than its factorization.

55635550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397 (or 392 counting only the distinct ones).

The product of its (nonzero) digits is 56250, while the sum is 34.

The square root of 55635550 is about 7458.9241851624. The cubic root of 55635550 is about 381.7544679126.

The spelling of 55635550 in words is "fifty-five million, six hundred thirty-five thousand, five hundred fifty".