51963648 has 72 divisors (see below), whose sum is σ = 150896256. Its totient is φ = 15744000.

The previous prime is 51963641. The next prime is 51963661. The reversal of 51963648 is 84636915.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51963641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5373 + ... + 11523.

Almost surely, 2^51963648 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 51963648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75448128).

51963648 is an abundant number, since it is smaller than the sum of its proper divisors (98932608).

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

51963648 is a wasteful number, since it uses less digits than its factorization.

51963648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6181 (or 6167 counting only the distinct ones).

The product of its digits is 155520, while the sum is 42.

The square root of 51963648 is about 7208.5815525664. The cubic root of 51963648 is about 373.1641183255.

The spelling of 51963648 in words is "fifty-one million, nine hundred sixty-three thousand, six hundred forty-eight".