551963 has 2 divisors, whose sum is σ = 551964. Its totient is φ = 551962.

The previous prime is 551959. The next prime is 551981. The reversal of 551963 is 369155.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 551963 - 2² = 551959 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 551963.

It is not a weakly prime, because it can be changed into another prime (551933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275981 + 275982.

It is an arithmetic number, because the mean of its divisors is an integer number (275982).

2⁵⁵¹⁹⁶³ is an apocalyptic number.

551963 is a deficient number, since it is larger than the sum of its proper divisors (1).

551963 is an equidigital number, since it uses as much as digits as its factorization.

551963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4050, while the sum is 29.

The square root of 551963 is about 742.9421242600. The cubic root of 551963 is about 82.0294857277.

The spelling of 551963 in words is "five hundred fifty-one thousand, nine hundred sixty-three".