53135404 has 72 divisors (see below), whose sum is σ = 117899712. Its totient is φ = 20805120.

The previous prime is 53135399. The next prime is 53135413. The reversal of 53135404 is 40453135.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 123069 + ... + 123499.

It is an arithmetic number, because the mean of its divisors is an integer number (1637496).

Almost surely, 2^53135404 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 53135404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58949856).

53135404 is an abundant number, since it is smaller than the sum of its proper divisors (64764308).

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

53135404 is a wasteful number, since it uses less digits than its factorization.

53135404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503 (or 494 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 53135404 is about 7289.4035421288. The cubic root of 53135404 is about 375.9481877452.

Adding to 53135404 its reverse (40453135), we get a palindrome (93588539).

The spelling of 53135404 in words is "fifty-three million, one hundred thirty-five thousand, four hundred four".