561066151 has 2 divisors, whose sum is σ = 561066152. Its totient is φ = 561066150.

The previous prime is 561066127. The next prime is 561066157. The reversal of 561066151 is 151660165.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 561066151 - 2²⁷ = 426848423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561066157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280533075 + 280533076.

It is an arithmetic number, because the mean of its divisors is an integer number (280533076).

Almost surely, 2^561066151 is an apocalyptic number.

561066151 is a deficient number, since it is larger than the sum of its proper divisors (1).

561066151 is an equidigital number, since it uses as much as digits as its factorization.

561066151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 561066151 is about 23686.8349721950. The cubic root of 561066151 is about 824.7798131703.

The spelling of 561066151 in words is "five hundred sixty-one million, sixty-six thousand, one hundred fifty-one".