51878672 has 10 divisors (see below), whose sum is σ = 100514958. Its totient is φ = 25939328.

The previous prime is 51878663. The next prime is 51878677. The reversal of 51878672 is 27687815.

It can be written as a sum of positive squares in only one way, i.e., 39740416 + 12138256 = 6304^2 + 3484^2 .

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (51878677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1621193 + ... + 1621224.

Almost surely, 2^51878672 is an apocalyptic number.

It is an amenable number.

51878672 is a deficient number, since it is larger than the sum of its proper divisors (48636286).

51878672 is a wasteful number, since it uses less digits than its factorization.

51878672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3242425 (or 3242419 counting only the distinct ones).

The product of its digits is 188160, while the sum is 44.

The square root of 51878672 is about 7202.6850548945. The cubic root of 51878672 is about 372.9605959520.

The spelling of 51878672 in words is "fifty-one million, eight hundred seventy-eight thousand, six hundred seventy-two".