2013521404 has 24 divisors (see below), whose sum is σ = 3566354400. Its totient is φ = 994583040.

The previous prime is 2013521401. The next prime is 2013521413. The reversal of 2013521404 is 4041253102.

It is a super-2 number, since 2×2013521404² = 8108536888732262432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2013521401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 650292 + ... + 653380.

It is an arithmetic number, because the mean of its divisors is an integer number (148598100).

Almost surely, 2^2013521404 is an apocalyptic number.

It is an amenable number.

2013521404 is a deficient number, since it is larger than the sum of its proper divisors (1552832996).

2013521404 is a wasteful number, since it uses less digits than its factorization.

2013521404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5013 (or 5011 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 2013521404 is about 44872.2787921452. The cubic root of 2013521404 is about 1262.7539921486.

Adding to 2013521404 its reverse (4041253102), we get a palindrome (6054774506).

The spelling of 2013521404 in words is "two billion, thirteen million, five hundred twenty-one thousand, four hundred four".