551005091 has 8 divisors (see below), whose sum is σ = 678160224. Its totient is φ = 435960000.

The previous prime is 551005079. The next prime is 551005097. The reversal of 551005091 is 190500155.

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

It is not a de Polignac number, because 551005091 - 2¹⁰ = 551004067 is a prime.

It is a super-2 number, since 2×551005091² = 607213220615836562, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 551005091.

It is not an unprimeable number, because it can be changed into a prime (551005097) 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, 3027410 + ... + 3027591.

It is an arithmetic number, because the mean of its divisors is an integer number (84770028).

Almost surely, 2^551005091 is an apocalyptic number.

551005091 is a deficient number, since it is larger than the sum of its proper divisors (127155133).

551005091 is a wasteful number, since it uses less digits than its factorization.

551005091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6055021.

The product of its (nonzero) digits is 1125, while the sum is 26.

The square root of 551005091 is about 23473.4976303064. The cubic root of 551005091 is about 819.8200532168.

The spelling of 551005091 in words is "five hundred fifty-one million, five thousand, ninety-one".