2001522 has 16 divisors (see below), whose sum is σ = 4141440. Its totient is φ = 644112.

The previous prime is 2001511. The next prime is 2001533. The reversal of 2001522 is 2251002.

It is an interprime number because it is at equal distance from previous prime (2001511) and next prime (2001533).

It is a junction number, because it is equal to n+sod(n) for n = 2001498 and 2001507.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5578 + ... + 5925.

It is an arithmetic number, because the mean of its divisors is an integer number (258840).

2^2001522 is an apocalyptic number.

2001522 is an abundant number, since it is smaller than the sum of its proper divisors (2139918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2001522 is a wasteful number, since it uses less digits than its factorization.

2001522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11537.

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 2001522 is about 1414.7515682974. The cubic root of 2001522 is about 126.0240568830.

Adding to 2001522 its reverse (2251002), we get a palindrome (4252524).

The spelling of 2001522 in words is "two million, one thousand, five hundred twenty-two".