53530404 has 48 divisors (see below), whose sum is σ = 130576320. Its totient is φ = 17046400.

The previous prime is 53530381. The next prime is 53530417. The reversal of 53530404 is 40403535.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34387 + ... + 35909.

It is an arithmetic number, because the mean of its divisors is an integer number (2720340).

Almost surely, 2^53530404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53530404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65288160).

53530404 is an abundant number, since it is smaller than the sum of its proper divisors (77045916).

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

53530404 is a wasteful number, since it uses less digits than its factorization.

53530404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660 (or 1658 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 53530404 is about 7316.4474986157. The cubic root of 53530404 is about 376.8774681708.

Adding to 53530404 its reverse (40403535), we get a palindrome (93933939).

The spelling of 53530404 in words is "fifty-three million, five hundred thirty thousand, four hundred four".