560139521 has 2 divisors, whose sum is σ = 560139522. Its totient is φ = 560139520.

The previous prime is 560139491. The next prime is 560139523. The reversal of 560139521 is 125931065.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 434138896 + 126000625 = 20836^2 + 11225^2 .

It is a cyclic number.

It is not a de Polignac number, because 560139521 - 2¹⁰ = 560138497 is a prime.

It is a super-2 number, since 2×560139521² = 627512565972218882, which contains 22 as substring.

Together with 560139523, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (560139523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280069760 + 280069761.

It is an arithmetic number, because the mean of its divisors is an integer number (280069761).

Almost surely, 2^560139521 is an apocalyptic number.

It is an amenable number.

560139521 is a deficient number, since it is larger than the sum of its proper divisors (1).

560139521 is an equidigital number, since it uses as much as digits as its factorization.

560139521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 560139521 is about 23667.2668679761. The cubic root of 560139521 is about 824.3255073545.

The spelling of 560139521 in words is "five hundred sixty million, one hundred thirty-nine thousand, five hundred twenty-one".