51280880 has 40 divisors (see below), whose sum is σ = 136262112. Its totient is φ = 17581824.

The previous prime is 51280847. The next prime is 51280921. The reversal of 51280880 is 8808215.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45227 + ... + 46346.

Almost surely, 2^51280880 is an apocalyptic number.

It is an amenable number.

51280880 is an abundant number, since it is smaller than the sum of its proper divisors (84981232).

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

51280880 is a wasteful number, since it uses less digits than its factorization.

51280880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91593 (or 91587 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 32.

The square root of 51280880 is about 7161.0669596087. The cubic root of 51280880 is about 371.5225307517.

The spelling of 51280880 in words is "fifty-one million, two hundred eighty thousand, eight hundred eighty".