51280706 has 4 divisors (see below), whose sum is σ = 76921062. Its totient is φ = 25640352.

The previous prime is 51280693. The next prime is 51280711. The reversal of 51280706 is 60708215.

51280706 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60708215 = 5 ⋅12141643.

It can be written as a sum of positive squares in only one way, i.e., 29106025 + 22174681 = 5395^2 + 4709^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 12820175 + ... + 12820178.

Almost surely, 2^51280706 is an apocalyptic number.

51280706 is a deficient number, since it is larger than the sum of its proper divisors (25640356).

51280706 is a wasteful number, since it uses less digits than its factorization.

51280706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25640355.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 51280706 is about 7161.0548105709. The cubic root of 51280706 is about 371.5221105497.

It can be divided in two parts, 512 and 80706, that added together give a palindrome (81218).

The spelling of 51280706 in words is "fifty-one million, two hundred eighty thousand, seven hundred six".