1141661 has 2 divisors, whose sum is σ = 1141662. Its totient is φ = 1141660.

The previous prime is 1141649. The next prime is 1141667. The reversal of 1141661 is 1661411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 630436 + 511225 = 794^2 + 715^2 .

It is a cyclic number.

It is not a de Polignac number, because 1141661 - 2⁶ = 1141597 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 (1141667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 570830 + 570831.

It is an arithmetic number, because the mean of its divisors is an integer number (570831).

2^1141661 is an apocalyptic number.

It is an amenable number.

1141661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1141661 is an equidigital number, since it uses as much as digits as its factorization.

1141661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144, while the sum is 20.

The square root of 1141661 is about 1068.4853765962. The cubic root of 1141661 is about 104.5151035456.

The spelling of 1141661 in words is "one million, one hundred forty-one thousand, six hundred sixty-one".