551097 has 8 divisors (see below), whose sum is σ = 816480. Its totient is φ = 367380.

The previous prime is 551093. The next prime is 551099. The reversal of 551097 is 790155.

It is not a de Polignac number, because 551097 - 2² = 551093 is a prime.

It is a super-3 number, since 3×551097³ = 502117543334969019, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 20411 = 551097 / (5 + 5 + 1 + 0 + 9 + 7).

It is a self number, because there is not a number n which added to its sum of digits gives 551097.

It is not an unprimeable number, because it can be changed into a prime (551093) 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, 10179 + ... + 10232.

It is an arithmetic number, because the mean of its divisors is an integer number (102060).

2⁵⁵¹⁰⁹⁷ is an apocalyptic number.

It is an amenable number.

551097 is a deficient number, since it is larger than the sum of its proper divisors (265383).

551097 is a wasteful number, since it uses less digits than its factorization.

551097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20420 (or 20414 counting only the distinct ones).

The product of its (nonzero) digits is 1575, while the sum is 27.

The square root of 551097 is about 742.3590775359. The cubic root of 551097 is about 81.9865633348.

The spelling of 551097 in words is "five hundred fifty-one thousand, ninety-seven".