1587841 has 2 divisors, whose sum is σ = 1587842. Its totient is φ = 1587840.

The previous prime is 1587829. The next prime is 1587847. The reversal of 1587841 is 1487851.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 848241 + 739600 = 921^2 + 860^2 .

It is a cyclic number.

It is not a de Polignac number, because 1587841 - 2⁵ = 1587809 is a prime.

1587841 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1587797 and 1587806.

It is not a weakly prime, because it can be changed into another prime (1587847) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 793920 + 793921.

It is an arithmetic number, because the mean of its divisors is an integer number (793921).

2^1587841 is an apocalyptic number.

It is an amenable number.

1587841 is a deficient number, since it is larger than the sum of its proper divisors (1).

1587841 is an equidigital number, since it uses as much as digits as its factorization.

1587841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8960, while the sum is 34.

The square root of 1587841 is about 1260.0956312915. The cubic root of 1587841 is about 116.6636797421.

The spelling of 1587841 in words is "one million, five hundred eighty-seven thousand, eight hundred forty-one".