51186085 has 8 divisors (see below), whose sum is σ = 61601400. Its totient is φ = 40830144.

The previous prime is 51186071. The next prime is 51186103. The reversal of 51186085 is 58068115.

It can be written as a sum of positive squares in 4 ways, for example, as 16916769 + 34269316 = 4113^2 + 5854^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 51186085 - 2⁹ = 51185573 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51186085.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12922 + ... + 16411.

It is an arithmetic number, because the mean of its divisors is an integer number (7700175).

Almost surely, 2^51186085 is an apocalyptic number.

It is an amenable number.

51186085 is a deficient number, since it is larger than the sum of its proper divisors (10415315).

51186085 is a wasteful number, since it uses less digits than its factorization.

51186085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29687.

The product of its (nonzero) digits is 9600, while the sum is 34.

The square root of 51186085 is about 7154.4451217407. The cubic root of 51186085 is about 371.2934642095.

The spelling of 51186085 in words is "fifty-one million, one hundred eighty-six thousand, eighty-five".