55303533 has 32 divisors (see below), whose sum is σ = 88024320. Its totient is φ = 34191360.

The previous prime is 55303531. The next prime is 55303579. The reversal of 55303533 is 33530355.

It is not a de Polignac number, because 55303533 - 2¹ = 55303531 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 55303497 and 55303506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55303531) 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 31 ways as a sum of consecutive naturals, for example, 31741 + ... + 33437.

It is an arithmetic number, because the mean of its divisors is an integer number (2750760).

Almost surely, 2^55303533 is an apocalyptic number.

It is an amenable number.

55303533 is a deficient number, since it is larger than the sum of its proper divisors (32720787).

55303533 is a wasteful number, since it uses less digits than its factorization.

55303533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1794 (or 1788 counting only the distinct ones).

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

The square root of 55303533 is about 7436.6345210720. The cubic root of 55303533 is about 380.9935518780.

Adding to 55303533 its reverse (33530355), we get a palindrome (88833888).

The spelling of 55303533 in words is "fifty-five million, three hundred three thousand, five hundred thirty-three".