53404416 has 108 divisors (see below), whose sum is σ = 165915568. Its totient is φ = 16422912.

The previous prime is 53404397. The next prime is 53404423. The reversal of 53404416 is 61440435.

It is a self number, because there is not a number n which added to its sum of digits gives 53404416.

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 11 ways as a sum of consecutive naturals, for example, 29061 + ... + 30843.

Almost surely, 2^53404416 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 53404416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82957784).

53404416 is an abundant number, since it is smaller than the sum of its proper divisors (112511152).

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

53404416 is a wasteful number, since it uses less digits than its factorization.

53404416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1818 (or 1801 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 53404416 is about 7307.8325103960. The cubic root of 53404416 is about 376.5815656893.

The spelling of 53404416 in words is "fifty-three million, four hundred four thousand, four hundred sixteen".