551205442055 has 8 divisors (see below), whose sum is σ = 661450514832. Its totient is φ = 440961697408.

The previous prime is 551205441991. The next prime is 551205442057. The reversal of 551205442055 is 550244502155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 551205442055 - 2⁶ = 551205441991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551205442057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1484879 + ... + 1818591.

It is an arithmetic number, because the mean of its divisors is an integer number (82681314354).

Almost surely, 2^551205442055 is an apocalyptic number.

551205442055 is a deficient number, since it is larger than the sum of its proper divisors (110245072777).

551205442055 is a wasteful number, since it uses less digits than its factorization.

551205442055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664065.

The product of its (nonzero) digits is 200000, while the sum is 38.

The spelling of 551205442055 in words is "five hundred fifty-one billion, two hundred five million, four hundred forty-two thousand, fifty-five".