1605041 has 2 divisors, whose sum is σ = 1605042. Its totient is φ = 1605040.

The previous prime is 1605031. The next prime is 1605047. The reversal of 1605041 is 1405061.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 846400 + 758641 = 920^2 + 871^2 .

It is a cyclic number.

It is not a de Polignac number, because 1605041 - 2¹⁰ = 1604017 is a prime.

It is a super-2 number, since 2×1605041² = 5152313223362, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1605047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 802520 + 802521.

It is an arithmetic number, because the mean of its divisors is an integer number (802521).

2^1605041 is an apocalyptic number.

It is an amenable number.

1605041 is a deficient number, since it is larger than the sum of its proper divisors (1).

1605041 is an equidigital number, since it uses as much as digits as its factorization.

1605041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1605041 is about 1266.9021272379. The cubic root of 1605041 is about 117.0834138653.

The spelling of 1605041 in words is "one million, six hundred five thousand, forty-one".