51825691 has 8 divisors (see below), whose sum is σ = 52315200. Its totient is φ = 51338760.

The previous prime is 51825671. The next prime is 51825703. The reversal of 51825691 is 19652815.

51825691 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 cyclic number.

It is not a de Polignac number, because 51825691 - 2¹³ = 51817499 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51825691.

It is not an unprimeable number, because it can be changed into a prime (51825671) 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, 74656 + ... + 75346.

It is an arithmetic number, because the mean of its divisors is an integer number (6539400).

Almost surely, 2^51825691 is an apocalyptic number.

51825691 is a deficient number, since it is larger than the sum of its proper divisors (489509).

51825691 is a wasteful number, since it uses less digits than its factorization.

51825691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289.

The product of its digits is 21600, while the sum is 37.

The square root of 51825691 is about 7199.0062508655. The cubic root of 51825691 is about 372.8335909295.

The spelling of 51825691 in words is "fifty-one million, eight hundred twenty-five thousand, six hundred ninety-one".