51280436 has 24 divisors (see below), whose sum is σ = 91140000. Its totient is φ = 25244064.

The previous prime is 51280433. The next prime is 51280447. The reversal of 51280436 is 63408215.

51280436 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 51280399 and 51280408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51280433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82535 + ... + 83153.

It is an arithmetic number, because the mean of its divisors is an integer number (3797500).

Almost surely, 2^51280436 is an apocalyptic number.

It is an amenable number.

51280436 is a deficient number, since it is larger than the sum of its proper divisors (39859564).

51280436 is a wasteful number, since it uses less digits than its factorization.

51280436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911 (or 909 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 51280436 is about 7161.0359585747. The cubic root of 51280436 is about 371.5214585101.

The spelling of 51280436 in words is "fifty-one million, two hundred eighty thousand, four hundred thirty-six".