53903616 has 72 divisors (see below), whose sum is σ = 154526400. Its totient is φ = 16582656.

The previous prime is 53903593. The next prime is 53903621. The reversal of 53903616 is 61630935.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7285 + ... + 12683.

It is an arithmetic number, because the mean of its divisors is an integer number (2146200).

Almost surely, 2^53903616 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 53903616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77263200).

53903616 is an abundant number, since it is smaller than the sum of its proper divisors (100622784).

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

53903616 is a wasteful number, since it uses less digits than its factorization.

53903616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5431 (or 5417 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 33.

The square root of 53903616 is about 7341.9081988268. The cubic root of 53903616 is about 377.7512991309.

The spelling of 53903616 in words is "fifty-three million, nine hundred three thousand, six hundred sixteen".