2053521404 has 24 divisors (see below), whose sum is σ = 3923504256. Its totient is φ = 932670000.

The previous prime is 2053521377. The next prime is 2053521413. The reversal of 2053521404 is 4041253502.

It is a happy number.

It is a super-2 number, since 2×2053521404² = 8433900313372262432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38729 + ... + 74879.

It is an arithmetic number, because the mean of its divisors is an integer number (163479344).

Almost surely, 2^2053521404 is an apocalyptic number.

It is an amenable number.

2053521404 is a deficient number, since it is larger than the sum of its proper divisors (1869982852).

2053521404 is a wasteful number, since it uses less digits than its factorization.

2053521404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37457 (or 37455 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 2053521404 is about 45315.7964069926. The cubic root of 2053521404 is about 1271.0610522219.

Adding to 2053521404 its reverse (4041253502), we get a palindrome (6094774906).

The spelling of 2053521404 in words is "two billion, fifty-three million, five hundred twenty-one thousand, four hundred four".