53404 has 18 divisors (see below), whose sum is σ = 102480. Its totient is φ = 24336.

The previous prime is 53401. The next prime is 53407. The reversal of 53404 is 40435.

It is an interprime number because it is at equal distance from previous prime (53401) and next prime (53407).

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53401) by changing a digit.

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, 637 + ... + 715.

2⁵³⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

53404 is a deficient number, since it is larger than the sum of its proper divisors (49076).

53404 is a wasteful number, since it uses less digits than its factorization.

53404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109 (or 94 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 53404 is about 231.0930548502. The cubic root of 53404 is about 37.6580587878.

Adding to 53404 its reverse (40435), we get a palindrome (93839).

It can be divided in two parts, 53 and 404, that multiplied together give a palindrome (21412).

The spelling of 53404 in words is "fifty-three thousand, four hundred four".