561474899 has 2 divisors, whose sum is σ = 561474900. Its totient is φ = 561474898.

The previous prime is 561474877. The next prime is 561474911. The reversal of 561474899 is 998474165.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 561474899 - 2¹² = 561470803 is a prime.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 561474899.

It is not a weakly prime, because it can be changed into another prime (561474799) 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, 280737449 + 280737450.

It is an arithmetic number, because the mean of its divisors is an integer number (280737450).

Almost surely, 2^561474899 is an apocalyptic number.

561474899 is a deficient number, since it is larger than the sum of its proper divisors (1).

561474899 is an equidigital number, since it uses as much as digits as its factorization.

561474899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2177280, while the sum is 53.

The square root of 561474899 is about 23695.4615696762. The cubic root of 561474899 is about 824.9800541244.

The spelling of 561474899 in words is "five hundred sixty-one million, four hundred seventy-four thousand, eight hundred ninety-nine".