1541987 has 2 divisors, whose sum is σ = 1541988. Its totient is φ = 1541986.

The previous prime is 1541963. The next prime is 1541999. The reversal of 1541987 is 7891451.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1541987 - 2⁶ = 1541923 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1541957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 770993 + 770994.

It is an arithmetic number, because the mean of its divisors is an integer number (770994).

2^1541987 is an apocalyptic number.

1541987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1541987 is an equidigital number, since it uses as much as digits as its factorization.

1541987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 35.

The square root of 1541987 is about 1241.7676916396. The cubic root of 1541987 is about 115.5296800969.

The spelling of 1541987 in words is "one million, five hundred forty-one thousand, nine hundred eighty-seven".