51260320 has 24 divisors (see below), whose sum is σ = 121102884. Its totient is φ = 20504064.

The previous prime is 51260317. The next prime is 51260327. The reversal of 51260320 is 2306215.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 51208336 + 51984 = 7156^2 + 228^2 .

It is not an unprimeable number, because it can be changed into a prime (51260327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160029 + ... + 160348.

Almost surely, 2^51260320 is an apocalyptic number.

It is an amenable number.

51260320 is an abundant number, since it is smaller than the sum of its proper divisors (69842564).

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

51260320 is a wasteful number, since it uses less digits than its factorization.

51260320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320392 (or 320384 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 51260320 is about 7159.6312754219. The cubic root of 51260320 is about 371.4728727097.

Adding to 51260320 its reverse (2306215), we get a palindrome (53566535).

The spelling of 51260320 in words is "fifty-one million, two hundred sixty thousand, three hundred twenty".