1155653 has 2 divisors, whose sum is σ = 1155654. Its totient is φ = 1155652.

The previous prime is 1155631. The next prime is 1155659. The reversal of 1155653 is 3565511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 717409 + 438244 = 847^2 + 662^2 .

It is a cyclic number.

It is not a de Polignac number, because 1155653 - 2¹⁴ = 1139269 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1155659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577826 + 577827.

It is an arithmetic number, because the mean of its divisors is an integer number (577827).

2^1155653 is an apocalyptic number.

It is an amenable number.

1155653 is a deficient number, since it is larger than the sum of its proper divisors (1).

1155653 is an equidigital number, since it uses as much as digits as its factorization.

1155653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2250, while the sum is 26.

The square root of 1155653 is about 1075.0130231769. The cubic root of 1155653 is about 104.9403440417.

The spelling of 1155653 in words is "one million, one hundred fifty-five thousand, six hundred fifty-three".