51885316 has 36 divisors (see below), whose sum is σ = 106710156. Its totient is φ = 22008000.

The previous prime is 51885313. The next prime is 51885373. The reversal of 51885316 is 61358815.

It can be written as a sum of positive squares in 2 ways, for example, as 46867716 + 5017600 = 6846^2 + 2240^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51885311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18486 + ... + 21106.

It is an arithmetic number, because the mean of its divisors is an integer number (2964171).

Almost surely, 2^51885316 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 51885316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53355078).

51885316 is an abundant number, since it is smaller than the sum of its proper divisors (54824840).

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

51885316 is a wasteful number, since it uses less digits than its factorization.

51885316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2740 (or 2731 counting only the distinct ones).

The product of its digits is 28800, while the sum is 37.

The square root of 51885316 is about 7203.1462570185. The cubic root of 51885316 is about 372.9765167169.

The spelling of 51885316 in words is "fifty-one million, eight hundred eighty-five thousand, three hundred sixteen".