51405336 has 96 divisors (see below), whose sum is σ = 149526000. Its totient is φ = 15904512.

The previous prime is 51405271. The next prime is 51405337. The reversal of 51405336 is 63350415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51405337) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72150 + ... + 72858.

Almost surely, 2^51405336 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 51405336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74763000).

51405336 is an abundant number, since it is smaller than the sum of its proper divisors (98120664).

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

51405336 is a wasteful number, since it uses less digits than its factorization.

51405336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793 (or 786 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 51405336 is about 7169.7514601275. The cubic root of 51405336 is about 371.8228431524.

It can be divided in two parts, 514053 and 36, that added together give a square (514089 = 717²).

The spelling of 51405336 in words is "fifty-one million, four hundred five thousand, three hundred thirty-six".