551363 has 2 divisors, whose sum is σ = 551364. Its totient is φ = 551362.

The previous prime is 551347. The next prime is 551381. The reversal of 551363 is 363155.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 551363 - 2⁴ = 551347 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is equal to p₄₅₄₂₈ and since 551363 and 45428 have the same sum of digits, it is a Honaker prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 551363.

It is not a weakly prime, because it can be changed into another prime (551063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275681 + 275682.

It is an arithmetic number, because the mean of its divisors is an integer number (275682).

2⁵⁵¹³⁶³ is an apocalyptic number.

551363 is a deficient number, since it is larger than the sum of its proper divisors (1).

551363 is an equidigital number, since it uses as much as digits as its factorization.

551363 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1350, while the sum is 23.

The square root of 551363 is about 742.5382145048. The cubic root of 551363 is about 81.9997521309. Note that the first 3 decimals are identical.

The spelling of 551363 in words is "five hundred fifty-one thousand, three hundred sixty-three".