1003522 has 12 divisors (see below), whose sum is σ = 1630530. Its totient is φ = 463008.

The previous prime is 1003517. The next prime is 1003543. The reversal of 1003522 is 2253001.

It can be written as a sum of positive squares in 3 ways, for example, as 177241 + 826281 = 421^2 + 909^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1147 + ... + 1822.

2^1003522 is an apocalyptic number.

1003522 is a deficient number, since it is larger than the sum of its proper divisors (627008).

1003522 is a wasteful number, since it uses less digits than its factorization.

1003522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2997 (or 2984 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 1003522 is about 1001.7594521640. The cubic root of 1003522 is about 100.1172624415.

Adding to 1003522 its reverse (2253001), we get a palindrome (3256523).

It can be divided in two parts, 100352 and 2, that multiplied together give a square (200704 = 448²).

The spelling of 1003522 in words is "one million, three thousand, five hundred twenty-two".