51280632 has 48 divisors (see below), whose sum is σ = 149571240. Its totient is φ = 15778368.

The previous prime is 51280609. The next prime is 51280633. The reversal of 51280632 is 23608215.

51280632 is a `hidden beast` number, since 5 + 1 + 28 + 0 + 632 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 51280596 and 51280605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51280633) 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, 26458 + ... + 28329.

Almost surely, 2^51280632 is an apocalyptic number.

51280632 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

51280632 is an abundant number, since it is smaller than the sum of its proper divisors (98290608).

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

51280632 is a wasteful number, since it uses less digits than its factorization.

51280632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54812 (or 54805 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 51280632 is about 7161.0496437324. The cubic root of 51280632 is about 371.5219318428.

Adding to 51280632 its reverse (23608215), we get a palindrome (74888847).

The spelling of 51280632 in words is "fifty-one million, two hundred eighty thousand, six hundred thirty-two".