55001403 has 16 divisors (see below), whose sum is σ = 81612960. Its totient is φ = 36609408.

The previous prime is 55001399. The next prime is 55001417. The reversal of 55001403 is 30410055.

55001403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55001403 - 2² = 55001399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55001423) 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 15 ways as a sum of consecutive naturals, for example, 21951 + ... + 24327.

It is an arithmetic number, because the mean of its divisors is an integer number (5100810).

Almost surely, 2^55001403 is an apocalyptic number.

55001403 is a deficient number, since it is larger than the sum of its proper divisors (26611557).

55001403 is a wasteful number, since it uses less digits than its factorization.

55001403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3243 (or 3237 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 55001403 is about 7416.2930767331. The cubic root of 55001403 is about 380.2984797106.

Adding to 55001403 its reverse (30410055), we get a palindrome (85411458).

It can be divided in two parts, 5500 and 1403, that added together give a triangular number (6903 = T₁₁₇).

The spelling of 55001403 in words is "fifty-five million, one thousand, four hundred three".