551535563 has 2 divisors, whose sum is σ = 551535564. Its totient is φ = 551535562.

The previous prime is 551535547. The next prime is 551535571. The reversal of 551535563 is 365535155.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 551535563 - 2⁴ = 551535547 is a prime.

It is not a weakly prime, because it can be changed into another prime (551535583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275767781 + 275767782.

It is an arithmetic number, because the mean of its divisors is an integer number (275767782).

Almost surely, 2^551535563 is an apocalyptic number.

551535563 is a deficient number, since it is larger than the sum of its proper divisors (1).

551535563 is an equidigital number, since it uses as much as digits as its factorization.

551535563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 168750, while the sum is 38.

The square root of 551535563 is about 23484.7942933295. The cubic root of 551535563 is about 820.0830587094.

The spelling of 551535563 in words is "five hundred fifty-one million, five hundred thirty-five thousand, five hundred sixty-three".