1155617 has 2 divisors, whose sum is σ = 1155618. Its totient is φ = 1155616.

The previous prime is 1155613. The next prime is 1155619. The reversal of 1155617 is 7165511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 776161 + 379456 = 881^2 + 616^2 .

It is a cyclic number.

It is not a de Polignac number, because 1155617 - 2² = 1155613 is a prime.

Together with 1155619, 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 (1155611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577808 + 577809.

It is an arithmetic number, because the mean of its divisors is an integer number (577809).

2^1155617 is an apocalyptic number.

It is an amenable number.

1155617 is a deficient number, since it is larger than the sum of its proper divisors (1).

1155617 is an equidigital number, since it uses as much as digits as its factorization.

1155617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1050, while the sum is 26.

The square root of 1155617 is about 1074.9962790633. The cubic root of 1155617 is about 104.9392543572.

The spelling of 1155617 in words is "one million, one hundred fifty-five thousand, six hundred seventeen".