550345245621 has 16 divisors (see below), whose sum is σ = 746260108800. Its totient is φ = 360664094448.

The previous prime is 550345245559. The next prime is 550345245623. The reversal of 550345245621 is 126542543055.

It is not a de Polignac number, because 550345245621 - 2⁶ = 550345245557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550345245623) 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 15 ways as a sum of consecutive naturals, for example, 6383520 + ... + 6469158.

It is an arithmetic number, because the mean of its divisors is an integer number (46641256800).

Almost surely, 2^550345245621 is an apocalyptic number.

It is an amenable number.

550345245621 is a deficient number, since it is larger than the sum of its proper divisors (195914863179).

550345245621 is a wasteful number, since it uses less digits than its factorization.

550345245621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122008.

The product of its (nonzero) digits is 720000, while the sum is 42.

Adding to 550345245621 its reverse (126542543055), we get a palindrome (676887788676).

The spelling of 550345245621 in words is "five hundred fifty billion, three hundred forty-five million, two hundred forty-five thousand, six hundred twenty-one".