51477728 has 24 divisors (see below), whose sum is σ = 101651760. Its totient is φ = 25661440.

The previous prime is 51477721. The next prime is 51477731. The reversal of 51477728 is 82777415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51477721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9248 + ... + 13728.

It is an arithmetic number, because the mean of its divisors is an integer number (4235490).

Almost surely, 2^51477728 is an apocalyptic number.

It is an amenable number.

51477728 is a deficient number, since it is larger than the sum of its proper divisors (50174032).

51477728 is a wasteful number, since it uses less digits than its factorization.

51477728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4850 (or 4842 counting only the distinct ones).

The product of its digits is 109760, while the sum is 41.

The square root of 51477728 is about 7174.7981156267. The cubic root of 51477728 is about 371.9973021734.

The spelling of 51477728 in words is "fifty-one million, four hundred seventy-seven thousand, seven hundred twenty-eight".