55203403 has 8 divisors (see below), whose sum is σ = 59252688. Its totient is φ = 51243264.

The previous prime is 55203397. The next prime is 55203413. The reversal of 55203403 is 30430255.

55203403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 55203403 - 2⁹ = 55202891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55203413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21001 + ... + 23482.

It is an arithmetic number, because the mean of its divisors is an integer number (7406586).

Almost surely, 2^55203403 is an apocalyptic number.

55203403 is a deficient number, since it is larger than the sum of its proper divisors (4049285).

55203403 is a wasteful number, since it uses less digits than its factorization.

55203403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44573.

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 55203403 is about 7429.8992590748. The cubic root of 55203403 is about 380.7634765766.

Adding to 55203403 its reverse (30430255), we get a palindrome (85633658).

The spelling of 55203403 in words is "fifty-five million, two hundred three thousand, four hundred three".