51856382 has 8 divisors (see below), whose sum is σ = 77912496. Its totient is φ = 25885552.

The previous prime is 51856381. The next prime is 51856393. The reversal of 51856382 is 28365815.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51856381) 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, 19778 + ... + 22245.

It is an arithmetic number, because the mean of its divisors is an integer number (9739062).

Almost surely, 2^51856382 is an apocalyptic number.

51856382 is a deficient number, since it is larger than the sum of its proper divisors (26056114).

51856382 is a wasteful number, since it uses less digits than its factorization.

51856382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42642.

The product of its digits is 57600, while the sum is 38.

The square root of 51856382 is about 7201.1375490265. The cubic root of 51856382 is about 372.9071733394.

The spelling of 51856382 in words is "fifty-one million, eight hundred fifty-six thousand, three hundred eighty-two".