51280684 has 36 divisors (see below), whose sum is σ = 111067824. Its totient is φ = 20284992.

The previous prime is 51280681. The next prime is 51280693. The reversal of 51280684 is 48608215.

It is not an unprimeable number, because it can be changed into a prime (51280681) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 687 + ... + 10150.

Almost surely, 2^51280684 is an apocalyptic number.

It is an amenable number.

51280684 is an abundant number, since it is smaller than the sum of its proper divisors (59787140).

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

51280684 is a wasteful number, since it uses less digits than its factorization.

51280684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10874 (or 10859 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 51280684 is about 7161.0532744841. The cubic root of 51280684 is about 371.5220574206.

Adding to 51280684 its reverse (48608215), we get a palindrome (99888899).

The spelling of 51280684 in words is "fifty-one million, two hundred eighty thousand, six hundred eighty-four".