564999551 has 2 divisors, whose sum is σ = 564999552. Its totient is φ = 564999550.

The previous prime is 564999541. The next prime is 564999571. The reversal of 564999551 is 155999465.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 564999551 - 2¹⁰ = 564998527 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 564999493 and 564999502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (564999541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282499775 + 282499776.

It is an arithmetic number, because the mean of its divisors is an integer number (282499776).

Almost surely, 2^564999551 is an apocalyptic number.

564999551 is a deficient number, since it is larger than the sum of its proper divisors (1).

564999551 is an equidigital number, since it uses as much as digits as its factorization.

564999551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2187000, while the sum is 53.

The square root of 564999551 is about 23769.7192032216. The cubic root of 564999551 is about 826.7027219540.

The spelling of 564999551 in words is "five hundred sixty-four million, nine hundred ninety-nine thousand, five hundred fifty-one".