51825717 has 8 divisors (see below), whose sum is σ = 76778880. Its totient is φ = 34550460.

The previous prime is 51825713. The next prime is 51825743. The reversal of 51825717 is 71752815.

51825717 is a `hidden beast` number, since 5 + 1 + 82 + 571 + 7 = 666.

51825717 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51825717 - 2² = 51825713 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51825713) 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, 959709 + ... + 959762.

It is an arithmetic number, because the mean of its divisors is an integer number (9597360).

Almost surely, 2^51825717 is an apocalyptic number.

It is an amenable number.

51825717 is a deficient number, since it is larger than the sum of its proper divisors (24953163).

51825717 is a wasteful number, since it uses less digits than its factorization.

51825717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1919480 (or 1919474 counting only the distinct ones).

The product of its digits is 19600, while the sum is 36.

The square root of 51825717 is about 7199.0080566700. The cubic root of 51825717 is about 372.8336532774.

The spelling of 51825717 in words is "fifty-one million, eight hundred twenty-five thousand, seven hundred seventeen".