550101401 has 4 divisors (see below), whose sum is σ = 550150692. Its totient is φ = 550052112.

The previous prime is 550101361. The next prime is 550101403. The reversal of 550101401 is 104101055.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 104101055 = 5 ⋅20820211.

It can be written as a sum of positive squares in 2 ways, for example, as 397603600 + 152497801 = 19940^2 + 12349^2 .

It is a cyclic number.

It is not a de Polignac number, because 550101401 - 2²² = 545907097 is a prime.

It is a super-3 number, since 3×550101401³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 550101401.

It is not an unprimeable number, because it can be changed into a prime (550101403) 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, 971 + ... + 33183.

It is an arithmetic number, because the mean of its divisors is an integer number (137537673).

Almost surely, 2^550101401 is an apocalyptic number.

It is an amenable number.

550101401 is a deficient number, since it is larger than the sum of its proper divisors (49291).

550101401 is a wasteful number, since it uses less digits than its factorization.

550101401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49290.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 550101401 is about 23454.2405760664. The cubic root of 550101401 is about 819.3716190194.

Adding to 550101401 its reverse (104101055), we get a palindrome (654202456).

The spelling of 550101401 in words is "five hundred fifty million, one hundred one thousand, four hundred one".