550105551 has 12 divisors (see below), whose sum is σ = 797428320. Its totient is φ = 365430240.

The previous prime is 550105541. The next prime is 550105561. The reversal of 550105551 is 155501055.

550105551 is a `hidden beast` number, since 5 + 5 + 0 + 105 + 551 = 666.

It is an interprime number because it is at equal distance from previous prime (550105541) and next prime (550105561).

It is not a de Polignac number, because 550105551 - 2¹⁸ = 549843407 is a prime.

It is a super-2 number, since 2×550105551² = 605232234482027202, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550105541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 106231 + ... + 111288.

It is an arithmetic number, because the mean of its divisors is an integer number (66452360).

Almost surely, 2^550105551 is an apocalyptic number.

550105551 is a deficient number, since it is larger than the sum of its proper divisors (247322769).

550105551 is a wasteful number, since it uses less digits than its factorization.

550105551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217806 (or 217803 counting only the distinct ones).

The product of its (nonzero) digits is 3125, while the sum is 27.

The square root of 550105551 is about 23454.3290460418. The cubic root of 550105551 is about 819.3736794781.

The spelling of 550105551 in words is "five hundred fifty million, one hundred five thousand, five hundred fifty-one".