51267856 has 20 divisors (see below), whose sum is σ = 99499212. Its totient is φ = 25590656.

The previous prime is 51267841. The next prime is 51267857. The reversal of 51267856 is 65876215.

It can be written as a sum of positive squares in 2 ways, for example, as 34621456 + 16646400 = 5884^2 + 4080^2 .

It is not an unprimeable number, because it can be changed into a prime (51267857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8466 + ... + 13198.

Almost surely, 2^51267856 is an apocalyptic number.

It is an amenable number.

51267856 is a deficient number, since it is larger than the sum of its proper divisors (48231356).

51267856 is a wasteful number, since it uses less digits than its factorization.

51267856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5418 (or 5412 counting only the distinct ones).

The product of its digits is 100800, while the sum is 40.

The square root of 51267856 is about 7160.1575401663. The cubic root of 51267856 is about 371.4910757590.

The spelling of 51267856 in words is "fifty-one million, two hundred sixty-seven thousand, eight hundred fifty-six".