55503550 has 24 divisors (see below), whose sum is σ = 103745592. Its totient is φ = 22092000.

The previous prime is 55503533. The next prime is 55503551. The reversal of 55503550 is 5530555.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55503551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7920 + ... + 13180.

It is an arithmetic number, because the mean of its divisors is an integer number (4322733).

Almost surely, 2^55503550 is an apocalyptic number.

55503550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55503550 is a deficient number, since it is larger than the sum of its proper divisors (48242042).

55503550 is a wasteful number, since it uses less digits than its factorization.

55503550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5484 (or 5479 counting only the distinct ones).

The product of its (nonzero) digits is 9375, while the sum is 28.

The square root of 55503550 is about 7450.0704694654. The cubic root of 55503550 is about 381.4523140132.

The spelling of 55503550 in words is "fifty-five million, five hundred three thousand, five hundred fifty".