55603366 has 48 divisors (see below), whose sum is σ = 104986368. Its totient is φ = 21621600.

The previous prime is 55603363. The next prime is 55603403. The reversal of 55603366 is 66330655.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55603363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 167821 + ... + 168151.

It is an arithmetic number, because the mean of its divisors is an integer number (2187216).

Almost surely, 2^55603366 is an apocalyptic number.

55603366 is a deficient number, since it is larger than the sum of its proper divisors (49383002).

55603366 is a wasteful number, since it uses less digits than its factorization.

55603366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437 (or 424 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 34.

The square root of 55603366 is about 7456.7664573862. The cubic root of 55603366 is about 381.6808413933.

The spelling of 55603366 in words is "fifty-five million, six hundred three thousand, three hundred sixty-six".