20103550 has 12 divisors (see below), whose sum is σ = 37392696. Its totient is φ = 8041400.

The previous prime is 20103547. The next prime is 20103553. The reversal of 20103550 is 5530102.

It is an interprime number because it is at equal distance from previous prime (20103547) and next prime (20103553).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20103553) 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 5 ways as a sum of consecutive naturals, for example, 200986 + ... + 201085.

It is an arithmetic number, because the mean of its divisors is an integer number (3116058).

Almost surely, 2^20103550 is an apocalyptic number.

20103550 is a deficient number, since it is larger than the sum of its proper divisors (17289146).

20103550 is a wasteful number, since it uses less digits than its factorization.

20103550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402083 (or 402078 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 20103550 is about 4483.6982503286. The cubic root of 20103550 is about 271.9094187279.

Adding to 20103550 its reverse (5530102), we get a palindrome (25633652).

The spelling of 20103550 in words is "twenty million, one hundred three thousand, five hundred fifty".