550401403501 has 4 divisors (see below), whose sum is σ = 553778099392. Its totient is φ = 547024707612.

The previous prime is 550401403493. The next prime is 550401403523. The reversal of 550401403501 is 105304104055.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 105304104055 = 5 ⋅21060820811.

It is a cyclic number.

It is not a de Polignac number, because 550401403501 - 2³ = 550401403493 is a prime.

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 550401403501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550401403571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1688347701 + ... + 1688348026.

It is an arithmetic number, because the mean of its divisors is an integer number (138444524848).

Almost surely, 2^550401403501 is an apocalyptic number.

It is an amenable number.

550401403501 is a deficient number, since it is larger than the sum of its proper divisors (3376695891).

550401403501 is a wasteful number, since it uses less digits than its factorization.

550401403501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3376695890.

The product of its (nonzero) digits is 6000, while the sum is 28.

Adding to 550401403501 its reverse (105304104055), we get a palindrome (655705507556).

It can be divided in two parts, 55040 and 1403501, that added together give a palindrome (1458541).

The spelling of 550401403501 in words is "five hundred fifty billion, four hundred one million, four hundred three thousand, five hundred one".