51332736 has 192 divisors, whose sum is σ = 170233920. Its totient is φ = 13418496.

The previous prime is 51332693. The next prime is 51332747. The reversal of 51332736 is 63723315.

It is a tau number, because it is divible by the number of its divisors (192).

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, 454216 + ... + 454328.

It is an arithmetic number, because the mean of its divisors is an integer number (886635).

Almost surely, 2^51332736 is an apocalyptic number.

51332736 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51332736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85116960).

51332736 is an abundant number, since it is smaller than the sum of its proper divisors (118901184).

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

51332736 is a wasteful number, since it uses less digits than its factorization.

51332736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163 (or 138 counting only the distinct ones).

The product of its digits is 11340, while the sum is 30.

The square root of 51332736 is about 7164.6867342543. The cubic root of 51332736 is about 371.6477182946.

The spelling of 51332736 in words is "fifty-one million, three hundred thirty-two thousand, seven hundred thirty-six".