51528244 has 12 divisors (see below), whose sum is σ = 93284100. Its totient is φ = 24875648.

The previous prime is 51528203. The next prime is 51528259. The reversal of 51528244 is 44282515.

It can be written as a sum of positive squares in 2 ways, for example, as 33988900 + 17539344 = 5830^2 + 4188^2 .

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, 221989 + ... + 222220.

It is an arithmetic number, because the mean of its divisors is an integer number (7773675).

Almost surely, 2^51528244 is an apocalyptic number.

It is an amenable number.

51528244 is a deficient number, since it is larger than the sum of its proper divisors (41755856).

51528244 is a wasteful number, since it uses less digits than its factorization.

51528244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444242 (or 444240 counting only the distinct ones).

The product of its digits is 12800, while the sum is 31.

The square root of 51528244 is about 7178.3176301972. The cubic root of 51528244 is about 372.1189448907.

The spelling of 51528244 in words is "fifty-one million, five hundred twenty-eight thousand, two hundred forty-four".