53331516 has 144 divisors (see below), whose sum is σ = 166682880. Its totient is φ = 14031360.

The previous prime is 53331451. The next prime is 53331517. The reversal of 53331516 is 61513335.

It is a self number, because there is not a number n which added to its sum of digits gives 53331516.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53331517) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 252651 + ... + 252861.

It is an arithmetic number, because the mean of its divisors is an integer number (1157520).

Almost surely, 2^53331516 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 53331516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83341440).

53331516 is an abundant number, since it is smaller than the sum of its proper divisors (113351364).

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

53331516 is a wasteful number, since it uses less digits than its factorization.

53331516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304 (or 299 counting only the distinct ones).

The product of its digits is 4050, while the sum is 27.

The square root of 53331516 is about 7302.8430080346. The cubic root of 53331516 is about 376.4101360635.

The spelling of 53331516 in words is "fifty-three million, three hundred thirty-one thousand, five hundred sixteen".