51867825 has 24 divisors (see below), whose sum is σ = 86045088. Its totient is φ = 27569280.

The previous prime is 51867817. The next prime is 51867839. The reversal of 51867825 is 52876815.

51867825 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 51867825 - 2³ = 51867817 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 25029 + ... + 27021.

It is an arithmetic number, because the mean of its divisors is an integer number (3585212).

Almost surely, 2^51867825 is an apocalyptic number.

It is an amenable number.

51867825 is a deficient number, since it is larger than the sum of its proper divisors (34177263).

51867825 is a wasteful number, since it uses less digits than its factorization.

51867825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2353 (or 2348 counting only the distinct ones).

The product of its digits is 134400, while the sum is 42.

The square root of 51867825 is about 7201.9320324480. The cubic root of 51867825 is about 372.9346007764.

The spelling of 51867825 in words is "fifty-one million, eight hundred sixty-seven thousand, eight hundred twenty-five".