1522001 has 12 divisors (see below), whose sum is σ = 1706292. Its totient is φ = 1349088.

The previous prime is 1521991. The next prime is 1522009. The reversal of 1522001 is 1002251.

It can be written as a sum of positive squares in 2 ways, for example, as 638401 + 883600 = 799^2 + 940^2 .

It is not a de Polignac number, because 1522001 - 2⁶ = 1521937 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1522009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28691 + ... + 28743.

It is an arithmetic number, because the mean of its divisors is an integer number (142191).

2^1522001 is an apocalyptic number.

It is an amenable number.

1522001 is a deficient number, since it is larger than the sum of its proper divisors (184291).

1522001 is an equidigital number, since it uses as much as digits as its factorization.

1522001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 1522001 is about 1233.6940463502. The cubic root of 1522001 is about 115.0283735912.

Adding to 1522001 its reverse (1002251), we get a palindrome (2524252).

The spelling of 1522001 in words is "one million, five hundred twenty-two thousand, one".