51268416 has 56 divisors (see below), whose sum is σ = 136306560. Its totient is φ = 17006592.

The previous prime is 51268387. The next prime is 51268423. The reversal of 51268416 is 61486215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48825 + ... + 49863.

Almost surely, 2^51268416 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 51268416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68153280).

51268416 is an abundant number, since it is smaller than the sum of its proper divisors (85038144).

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

51268416 is a wasteful number, since it uses less digits than its factorization.

51268416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311 (or 1301 counting only the distinct ones).

The product of its digits is 11520, while the sum is 33.

The square root of 51268416 is about 7160.1966453443. The cubic root of 51268416 is about 371.4924283560.

The spelling of 51268416 in words is "fifty-one million, two hundred sixty-eight thousand, four hundred sixteen".