55303503 has 8 divisors (see below), whose sum is σ = 73971888. Its totient is φ = 36752064.

The previous prime is 55303489. The next prime is 55303529. The reversal of 55303503 is 30530355.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55303503 - 2¹² = 55299407 is a prime.

It is a super-3 number, since 3×55303503³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55303103) 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 7 ways as a sum of consecutive naturals, for example, 28126 + ... + 30027.

It is an arithmetic number, because the mean of its divisors is an integer number (9246486).

Almost surely, 2^55303503 is an apocalyptic number.

55303503 is a deficient number, since it is larger than the sum of its proper divisors (18668385).

55303503 is a wasteful number, since it uses less digits than its factorization.

55303503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58473.

The product of its (nonzero) digits is 3375, while the sum is 24.

The square root of 55303503 is about 7436.6325040303. The cubic root of 55303503 is about 380.9934829866.

Adding to 55303503 its reverse (30530355), we get a palindrome (85833858).

The spelling of 55303503 in words is "fifty-five million, three hundred three thousand, five hundred three".