51186542 has 8 divisors (see below), whose sum is σ = 83759832. Its totient is φ = 23266600.

The previous prime is 51186539. The next prime is 51186559. The reversal of 51186542 is 24568115.

51186542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 51186499 and 51186508.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1163309 + ... + 1163352.

It is an arithmetic number, because the mean of its divisors is an integer number (10469979).

Almost surely, 2^51186542 is an apocalyptic number.

51186542 is a deficient number, since it is larger than the sum of its proper divisors (32573290).

51186542 is a wasteful number, since it uses less digits than its factorization.

51186542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2326674.

The product of its digits is 9600, while the sum is 32.

The square root of 51186542 is about 7154.4770598556. The cubic root of 51186542 is about 371.2945692013.

The spelling of 51186542 in words is "fifty-one million, one hundred eighty-six thousand, five hundred forty-two".