51861282 has 16 divisors (see below), whose sum is σ = 113152032. Its totient is φ = 15715520.

The previous prime is 51861281. The next prime is 51861287. The reversal of 51861282 is 28216815.

51861282 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (51861281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 392823 + ... + 392954.

It is an arithmetic number, because the mean of its divisors is an integer number (7072002).

Almost surely, 2^51861282 is an apocalyptic number.

51861282 is an abundant number, since it is smaller than the sum of its proper divisors (61290750).

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

51861282 is a wasteful number, since it uses less digits than its factorization.

51861282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785793.

The product of its digits is 7680, while the sum is 33.

The square root of 51861282 is about 7201.4777650146. The cubic root of 51861282 is about 372.9189185193.

The spelling of 51861282 in words is "fifty-one million, eight hundred sixty-one thousand, two hundred eighty-two".