564161551 has 2 divisors, whose sum is σ = 564161552. Its totient is φ = 564161550.

The previous prime is 564161497. The next prime is 564161569. The reversal of 564161551 is 155161465.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 564161551 - 2¹⁵ = 564128783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (564161251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282080775 + 282080776.

It is an arithmetic number, because the mean of its divisors is an integer number (282080776).

Almost surely, 2^564161551 is an apocalyptic number.

564161551 is a deficient number, since it is larger than the sum of its proper divisors (1).

564161551 is an equidigital number, since it uses as much as digits as its factorization.

564161551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18000, while the sum is 34.

The square root of 564161551 is about 23752.0851926731. The cubic root of 564161551 is about 826.2938014701.

The spelling of 564161551 in words is "five hundred sixty-four million, one hundred sixty-one thousand, five hundred fifty-one".