51277752 has 64 divisors (see below), whose sum is σ = 145497600. Its totient is φ = 16725600.

The previous prime is 51277747. The next prime is 51277753. The reversal of 51277752 is 25777215.

51277752 is a `hidden beast` number, since 512 + 77 + 75 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51277753) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7627 + ... + 12677.

It is an arithmetic number, because the mean of its divisors is an integer number (2273400).

Almost surely, 2^51277752 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 51277752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72748800).

51277752 is an abundant number, since it is smaller than the sum of its proper divisors (94219848).

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

51277752 is a wasteful number, since it uses less digits than its factorization.

51277752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5113 (or 5103 counting only the distinct ones).

The product of its digits is 34300, while the sum is 36.

The square root of 51277752 is about 7160.8485530697. The cubic root of 51277752 is about 371.5149766295.

The spelling of 51277752 in words is "fifty-one million, two hundred seventy-seven thousand, seven hundred fifty-two".