1160555621 has 2 divisors, whose sum is σ = 1160555622. Its totient is φ = 1160555620.

The previous prime is 1160555581. The next prime is 1160555651. The reversal of 1160555621 is 1265550611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1043613025 + 116942596 = 32305^2 + 10814^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1160555621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1160555651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 580277810 + 580277811.

It is an arithmetic number, because the mean of its divisors is an integer number (580277811).

Almost surely, 2^1160555621 is an apocalyptic number.

It is an amenable number.

1160555621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1160555621 is an equidigital number, since it uses as much as digits as its factorization.

1160555621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9000, while the sum is 32.

The square root of 1160555621 is about 34066.9285524833. The cubic root of 1160555621 is about 1050.8853065572.

The spelling of 1160555621 in words is "one billion, one hundred sixty million, five hundred fifty-five thousand, six hundred twenty-one".