555505550551 has 16 divisors (see below), whose sum is σ = 650295300096. Its totient is φ = 464633882496.

The previous prime is 555505550549. The next prime is 555505550563. The reversal of 555505550551 is 155055505555.

It is a happy number.

It is not a de Polignac number, because 555505550551 - 2¹ = 555505550549 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 (555505550521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2394271 + ... + 2616016.

It is an arithmetic number, because the mean of its divisors is an integer number (40643456256).

Almost surely, 2^555505550551 is an apocalyptic number.

555505550551 is a deficient number, since it is larger than the sum of its proper divisors (94789749545).

555505550551 is a wasteful number, since it uses less digits than its factorization.

555505550551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5010678.

The product of its (nonzero) digits is 1953125, while the sum is 46.

The spelling of 555505550551 in words is "five hundred fifty-five billion, five hundred five million, five hundred fifty thousand, five hundred fifty-one".