551005055 has 4 divisors (see below), whose sum is σ = 661206072. Its totient is φ = 440804040.

The previous prime is 551005031. The next prime is 551005069. The reversal of 551005055 is 550500155.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 551005055 - 2²⁶ = 483896191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 55100501 + ... + 55100510.

It is an arithmetic number, because the mean of its divisors is an integer number (165301518).

Almost surely, 2^551005055 is an apocalyptic number.

551005055 is a deficient number, since it is larger than the sum of its proper divisors (110201017).

551005055 is a wasteful number, since it uses less digits than its factorization.

551005055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110201016.

The product of its (nonzero) digits is 3125, while the sum is 26.

The square root of 551005055 is about 23473.4968634841. The cubic root of 551005055 is about 819.8200353625.

The spelling of 551005055 in words is "five hundred fifty-one million, five thousand, fifty-five".