51719272 has 72 divisors (see below), whose sum is σ = 112529970. Its totient is φ = 22264000.

The previous prime is 51719263. The next prime is 51719293. The reversal of 51719272 is 27291715.

It can be written as a sum of positive squares in only one way, i.e., 30980356 + 20738916 = 5566^2 + 4554^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 512022 + ... + 512122.

Almost surely, 2^51719272 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 51719272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56264985).

51719272 is an abundant number, since it is smaller than the sum of its proper divisors (60810698).

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

51719272 is a wasteful number, since it uses less digits than its factorization.

51719272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175 (or 137 counting only the distinct ones).

The product of its digits is 8820, while the sum is 34.

The square root of 51719272 is about 7191.6112241973. The cubic root of 51719272 is about 372.5782235914.

The spelling of 51719272 in words is "fifty-one million, seven hundred nineteen thousand, two hundred seventy-two".