55006403 has 4 divisors (see below), whose sum is σ = 56176800. Its totient is φ = 53836008.

The previous prime is 55006381. The next prime is 55006423. The reversal of 55006403 is 30460055.

55006403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30460055 = 5 ⋅6092011.

It is a cyclic number.

It is not a de Polignac number, because 55006403 - 2¹⁶ = 54940867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55006423) 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 3 ways as a sum of consecutive naturals, for example, 585128 + ... + 585221.

It is an arithmetic number, because the mean of its divisors is an integer number (14044200).

Almost surely, 2^55006403 is an apocalyptic number.

55006403 is a deficient number, since it is larger than the sum of its proper divisors (1170397).

55006403 is a wasteful number, since it uses less digits than its factorization.

55006403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1170396.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 55006403 is about 7416.6301647042. The cubic root of 55006403 is about 380.3100032639.

Adding to 55006403 its reverse (30460055), we get a palindrome (85466458).

The spelling of 55006403 in words is "fifty-five million, six thousand, four hundred three".