1371001 has 2 divisors, whose sum is σ = 1371002. Its totient is φ = 1371000.

The previous prime is 1370987. The next prime is 1371017. The reversal of 1371001 is 1001731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 810000 + 561001 = 900^2 + 749^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1371001 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1371031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 685500 + 685501.

It is an arithmetic number, because the mean of its divisors is an integer number (685501).

2^1371001 is an apocalyptic number.

It is an amenable number.

1371001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1371001 is an equidigital number, since it uses as much as digits as its factorization.

1371001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21, while the sum is 13.

The square root of 1371001 is about 1170.8975189998. The cubic root of 1371001 is about 111.0910974694.

Adding to 1371001 its reverse (1001731), we get a palindrome (2372732).

The spelling of 1371001 in words is "one million, three hundred seventy-one thousand, one".