55016403 has 16 divisors (see below), whose sum is σ = 83645856. Its totient is φ = 31864320.

The previous prime is 55016399. The next prime is 55016407. The reversal of 55016403 is 30461055.

It is an interprime number because it is at equal distance from previous prime (55016399) and next prime (55016407).

It is not a de Polignac number, because 55016403 - 2² = 55016399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55016407) 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 15 ways as a sum of consecutive naturals, for example, 40828 + ... + 42153.

It is an arithmetic number, because the mean of its divisors is an integer number (5227866).

Almost surely, 2^55016403 is an apocalyptic number.

55016403 is a deficient number, since it is larger than the sum of its proper divisors (28629453).

55016403 is a wasteful number, since it uses less digits than its factorization.

55016403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83014.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 55016403 is about 7417.3042946882. The cubic root of 55016403 is about 380.3330482755. Note that the first 3 decimals are identical.

Adding to 55016403 its reverse (30461055), we get a palindrome (85477458).

The spelling of 55016403 in words is "fifty-five million, sixteen thousand, four hundred three".