51061856 has 24 divisors (see below), whose sum is σ = 100719864. Its totient is φ = 25482240.

The previous prime is 51061847. The next prime is 51061859. The reversal of 51061856 is 65816015.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51061859) 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, 20351 + ... + 22721.

It is an arithmetic number, because the mean of its divisors is an integer number (4196661).

Almost surely, 2^51061856 is an apocalyptic number.

It is an amenable number.

51061856 is a deficient number, since it is larger than the sum of its proper divisors (49658008).

51061856 is a wasteful number, since it uses less digits than its factorization.

51061856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3054 (or 3046 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 51061856 is about 7145.7579024201. The cubic root of 51061856 is about 370.9928435641.

The spelling of 51061856 in words is "fifty-one million, sixty-one thousand, eight hundred fifty-six".