51836042 has 4 divisors (see below), whose sum is σ = 77754066. Its totient is φ = 25918020.

The previous prime is 51836041. The next prime is 51836053. The reversal of 51836042 is 24063815.

51836042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 28206721 + 23629321 = 5311^2 + 4861^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51835996 and 51836014.

It is not an unprimeable number, because it can be changed into a prime (51836041) 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 as a sum of consecutive naturals, namely, 12959009 + ... + 12959012.

Almost surely, 2^51836042 is an apocalyptic number.

51836042 is a deficient number, since it is larger than the sum of its proper divisors (25918024).

51836042 is a wasteful number, since it uses less digits than its factorization.

51836042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25918023.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 51836042 is about 7199.7251336423. The cubic root of 51836042 is about 372.8584109465.

Adding to 51836042 its reverse (24063815), we get a palindrome (75899857).

The spelling of 51836042 in words is "fifty-one million, eight hundred thirty-six thousand, forty-two".