51863256 has 48 divisors (see below), whose sum is σ = 143123760. Its totient is φ = 16960320.

The previous prime is 51863249. The next prime is 51863257. The reversal of 51863256 is 65236815.

51863256 is a `hidden beast` number, since 5 + 18 + 632 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 51863256.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51863257) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2980 + ... + 10611.

It is an arithmetic number, because the mean of its divisors is an integer number (2981745).

Almost surely, 2^51863256 is an apocalyptic number.

It is an amenable number.

51863256 is an abundant number, since it is smaller than the sum of its proper divisors (91260504).

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

51863256 is a wasteful number, since it uses less digits than its factorization.

51863256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13656 (or 13649 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 51863256 is about 7201.6148189139. The cubic root of 51863256 is about 372.9236499398.

The spelling of 51863256 in words is "fifty-one million, eight hundred sixty-three thousand, two hundred fifty-six".