1173553 has 2 divisors, whose sum is σ = 1173554. Its totient is φ = 1173552.

The previous prime is 1173551. The next prime is 1173581. The reversal of 1173553 is 3553711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 954529 + 219024 = 977^2 + 468^2 .

It is a cyclic number.

It is not a de Polignac number, because 1173553 - 2¹ = 1173551 is a prime.

Together with 1173551, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1173551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 586776 + 586777.

It is an arithmetic number, because the mean of its divisors is an integer number (586777).

2^1173553 is an apocalyptic number.

It is an amenable number.

1173553 is a deficient number, since it is larger than the sum of its proper divisors (1).

1173553 is an equidigital number, since it uses as much as digits as its factorization.

1173553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1575, while the sum is 25.

The square root of 1173553 is about 1083.3065124885. The cubic root of 1173553 is about 105.4793802308.

The spelling of 1173553 in words is "one million, one hundred seventy-three thousand, five hundred fifty-three".