55503333 has 8 divisors (see below), whose sum is σ = 82227200. Its totient is φ = 37002204.

The previous prime is 55503323. The next prime is 55503341. The reversal of 55503333 is 33330555.

It is not a de Polignac number, because 55503333 - 2¹⁰ = 55502309 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 2055679 = 55503333 / (5 + 5 + 5 + 0 + 3 + 3 + 3 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55503297 and 55503306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55503323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1027813 + ... + 1027866.

It is an arithmetic number, because the mean of its divisors is an integer number (10278400).

Almost surely, 2^55503333 is an apocalyptic number.

It is an amenable number.

55503333 is a deficient number, since it is larger than the sum of its proper divisors (26723867).

55503333 is a wasteful number, since it uses less digits than its factorization.

55503333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055688 (or 2055682 counting only the distinct ones).

The product of its (nonzero) digits is 10125, while the sum is 27.

The square root of 55503333 is about 7450.0559058305. The cubic root of 55503333 is about 381.4518168963.

Adding to 55503333 its reverse (33330555), we get a palindrome (88833888).

The spelling of 55503333 in words is "fifty-five million, five hundred three thousand, three hundred thirty-three".