51488272 has 40 divisors (see below), whose sum is σ = 112349952. Its totient is φ = 22646400.

The previous prime is 51488267. The next prime is 51488273. The reversal of 51488272 is 27288415.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (51488273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 738 + ... + 10174.

Almost surely, 2^51488272 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 51488272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56174976).

51488272 is an abundant number, since it is smaller than the sum of its proper divisors (60861680).

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

51488272 is a wasteful number, since it uses less digits than its factorization.

51488272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9487 (or 9481 counting only the distinct ones).

The product of its digits is 35840, while the sum is 37.

The square root of 51488272 is about 7175.5328721984. The cubic root of 51488272 is about 372.0226987344.

The spelling of 51488272 in words is "fifty-one million, four hundred eighty-eight thousand, two hundred seventy-two".