51648272 has 20 divisors (see below), whose sum is σ = 107766540. Its totient is φ = 23837568.

The previous prime is 51648241. The next prime is 51648299. The reversal of 51648272 is 27284615.

It can be written as a sum of positive squares in 2 ways, for example, as 8667136 + 42981136 = 2944^2 + 6556^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123947 + ... + 124362.

It is an arithmetic number, because the mean of its divisors is an integer number (5388327).

Almost surely, 2^51648272 is an apocalyptic number.

51648272 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

51648272 is an abundant number, since it is smaller than the sum of its proper divisors (56118268).

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

51648272 is a wasteful number, since it uses less digits than its factorization.

51648272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248330 (or 248324 counting only the distinct ones).

The product of its digits is 26880, while the sum is 35.

The square root of 51648272 is about 7186.6732220131. The cubic root of 51648272 is about 372.4076542403.

The spelling of 51648272 in words is "fifty-one million, six hundred forty-eight thousand, two hundred seventy-two".