53521416 has 96 divisors (see below), whose sum is σ = 157422720. Its totient is φ = 16329600.

The previous prime is 53521393. The next prime is 53521439. The reversal of 53521416 is 61412535.

It is an interprime number because it is at equal distance from previous prime (53521393) and next prime (53521439).

It is a self number, because there is not a number n which added to its sum of digits gives 53521416.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 197361 + ... + 197631.

It is an arithmetic number, because the mean of its divisors is an integer number (1639820).

Almost surely, 2^53521416 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 53521416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78711360).

53521416 is an abundant number, since it is smaller than the sum of its proper divisors (103901304).

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

53521416 is a wasteful number, since it uses less digits than its factorization.

53521416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507 (or 500 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 53521416 is about 7315.8332403083. The cubic root of 53521416 is about 376.8563738392.

The spelling of 53521416 in words is "fifty-three million, five hundred twenty-one thousand, four hundred sixteen".