1291153 has 2 divisors, whose sum is σ = 1291154. Its totient is φ = 1291152.

The previous prime is 1291139. The next prime is 1291159. The reversal of 1291153 is 3511921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1272384 + 18769 = 1128^2 + 137^2 .

It is a cyclic number.

It is not a de Polignac number, because 1291153 - 2¹³ = 1282961 is a prime.

1291153 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1291159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 645576 + 645577.

It is an arithmetic number, because the mean of its divisors is an integer number (645577).

2^1291153 is an apocalyptic number.

It is an amenable number.

1291153 is a deficient number, since it is larger than the sum of its proper divisors (1).

1291153 is an equidigital number, since it uses as much as digits as its factorization.

1291153 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 270, while the sum is 22.

The square root of 1291153 is about 1136.2891357397. The cubic root of 1291153 is about 108.8911462734.

It can be divided in two parts, 1291 and 153, that added together give a square (1444 = 38²).

The spelling of 1291153 in words is "one million, two hundred ninety-one thousand, one hundred fifty-three".