550000551 has 8 divisors (see below), whose sum is σ = 739108864. Its totient is φ = 363779640.

The previous prime is 550000547. The next prime is 550000559. The reversal of 550000551 is 155000055.

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

It is not a de Polignac number, because 550000551 - 2² = 550000547 is a prime.

It is a super-2 number, since 2×550000551² = 605001212200607202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550000559) 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, 721405 + ... + 722166.

It is an arithmetic number, because the mean of its divisors is an integer number (92388608).

Almost surely, 2^550000551 is an apocalyptic number.

550000551 is a deficient number, since it is larger than the sum of its proper divisors (189108313).

550000551 is a wasteful number, since it uses less digits than its factorization.

550000551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1443701.

The product of its (nonzero) digits is 625, while the sum is 21.

The square root of 550000551 is about 23452.0905464737. The cubic root of 550000551 is about 819.3215442042.

The spelling of 550000551 in words is "five hundred fifty million, five hundred fifty-one", and thus it is an aban number.