551056242145530 has 64 divisors (see below), whose sum is σ = 1443779325186048. Its totient is φ = 133495513220160.

The previous prime is 551056242145441. The next prime is 551056242145583. The reversal of 551056242145530 is 35541242650155.

It is a self number, because there is not a number n which added to its sum of digits gives 551056242145530.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 586272294 + ... + 587211473.

It is an arithmetic number, because the mean of its divisors is an integer number (22559051956032).

Almost surely, 2^{551056242145530} is an apocalyptic number.

551056242145530 is an abundant number, since it is smaller than the sum of its proper divisors (892723083040518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

551056242145530 is a wasteful number, since it uses less digits than its factorization.

551056242145530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173485211.

The product of its (nonzero) digits is 3600000, while the sum is 48.

Adding to 551056242145530 its reverse (35541242650155), we get a palindrome (586597484795685).

The spelling of 551056242145530 in words is "five hundred fifty-one trillion, fifty-six billion, two hundred forty-two million, one hundred forty-five thousand, five hundred thirty".