561526073 has 2 divisors, whose sum is σ = 561526074. Its totient is φ = 561526072.

The previous prime is 561525983. The next prime is 561526087. The reversal of 561526073 is 370625165.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 285035689 + 276490384 = 16883^2 + 16628^2 .

It is a cyclic number.

It is not a de Polignac number, because 561526073 - 2¹⁰ = 561525049 is a prime.

It is not a weakly prime, because it can be changed into another prime (561526093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280763036 + 280763037.

It is an arithmetic number, because the mean of its divisors is an integer number (280763037).

Almost surely, 2^561526073 is an apocalyptic number.

It is an amenable number.

561526073 is a deficient number, since it is larger than the sum of its proper divisors (1).

561526073 is an equidigital number, since it uses as much as digits as its factorization.

561526073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 561526073 is about 23696.5413721074. The cubic root of 561526073 is about 825.0051168339.

The spelling of 561526073 in words is "five hundred sixty-one million, five hundred twenty-six thousand, seventy-three".