560721457 has 2 divisors, whose sum is σ = 560721458. Its totient is φ = 560721456.

The previous prime is 560721451. The next prime is 560721461. The reversal of 560721457 is 754127065.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 328189456 + 232532001 = 18116^2 + 15249^2 .

It is a cyclic number.

It is not a de Polignac number, because 560721457 - 2¹¹ = 560719409 is a prime.

It is not a weakly prime, because it can be changed into another prime (560721451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280360728 + 280360729.

It is an arithmetic number, because the mean of its divisors is an integer number (280360729).

Almost surely, 2^560721457 is an apocalyptic number.

It is an amenable number.

560721457 is a deficient number, since it is larger than the sum of its proper divisors (1).

560721457 is an equidigital number, since it uses as much as digits as its factorization.

560721457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58800, while the sum is 37.

The square root of 560721457 is about 23679.5577872561. The cubic root of 560721457 is about 824.6108759354.

The spelling of 560721457 in words is "five hundred sixty million, seven hundred twenty-one thousand, four hundred fifty-seven".