51280700 has 36 divisors (see below), whose sum is σ = 115122840. Its totient is φ = 19803840.

The previous prime is 51280693. The next prime is 51280711. The reversal of 51280700 is 708215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5942 + ... + 11741.

Almost surely, 2^51280700 is an apocalyptic number.

51280700 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51280700 is an abundant number, since it is smaller than the sum of its proper divisors (63842140).

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

51280700 is a wasteful number, since it uses less digits than its factorization.

51280700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17726 (or 17719 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 51280700 is about 7161.0543916381. The cubic root of 51280700 is about 371.5220960600.

Adding to 51280700 its reverse (708215), we get a palindrome (51988915).

The spelling of 51280700 in words is "fifty-one million, two hundred eighty thousand, seven hundred".